217693980

素因数分解:

$2^2\times 3^9\times 5^1\times 7^1\times {\mathrm{79}}^1$

素因数の和:122

約数の個数: 240

約数和(自身を含む): 793605120

約数和(自身を除く): 575911140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 79, 81, 84, 90, 105, 108, 126, 135, 140, 158, 162, 180, 189, 210, 237, 243, 252, 270, 315, 316, 324, 378, 395, 405, 420, 474, 486, 540, 553, 567, 630, 711, 729, 756, 790, 810, 945, 948, 972, 1106, 1134, 1185, 1215, 1260, 1422, 1458, 1580, 1620, 1659, 1701, 1890, 2133, 2187, 2212, 2268, 2370, 2430, 2765, 2835, 2844, 2916, 3318, 3402, 3555, 3645, 3780, 4266, 4374, 4740, 4860, 4977, 5103, 5530, 5670, 6399, 6561, 6636, 6804, 7110, 7290, 8295, 8505, 8532, 8748, 9954, 10206, 10665, 10935, 11060, 11340, 12798, 13122, 14220, 14580, 14931, 15309, 16590, 17010, 19197, 19683, 19908, 20412, 21330, 21870, 24885, 25515, 25596, 26244, 29862, 30618, 31995, 32805, 33180, 34020, 38394, 39366, 42660, 43740, 44793, 45927, 49770, 51030, 57591, 59724, 61236, 63990, 65610, 74655, 76545, 76788, 78732, 89586, 91854, 95985, 98415, 99540, 102060, 115182, 127980, 131220, 134379, 137781, 149310, 153090, 172773, 179172, 183708, 191970, 196830, 223965, 229635, 230364, 268758, 275562, 287955, 298620, 306180, 345546, 383940, 393660, 403137, 447930, 459270, 518319, 537516, 551124, 575910, 671895, 688905, 691092, 806274, 863865, 895860, 918540, 1036638, 1151820, 1209411, 1343790, 1377810, 1554957, 1612548, 1727730, 2015685, 2073276, 2418822, 2591595, 2687580, 2755620, 3109914, 3455460, 3628233, 4031370, 4837644, 5183190, 6047055, 6219828, 7256466, 7774785, 8062740, 10366380, 10884699, 12094110, 14512932, 15549570, 18141165, 21769398, 24188220, 31099140, 36282330, 43538796, 54423495, 72564660, 108846990, 217693980]

約数ペア:

[(1, 217693980), (2, 108846990), (3, 72564660), (4, 54423495), (5, 43538796), (6, 36282330), (7, 31099140), (9, 24188220), (10, 21769398), (12, 18141165), (14, 15549570), (15, 14512932), (18, 12094110), (20, 10884699), (21, 10366380), (27, 8062740), (28, 7774785), (30, 7256466), (35, 6219828), (36, 6047055), (42, 5183190), (45, 4837644), (54, 4031370), (60, 3628233), (63, 3455460), (70, 3109914), (79, 2755620), (81, 2687580), (84, 2591595), (90, 2418822), (105, 2073276), (108, 2015685), (126, 1727730), (135, 1612548), (140, 1554957), (158, 1377810), (162, 1343790), (180, 1209411), (189, 1151820), (210, 1036638), (237, 918540), (243, 895860), (252, 863865), (270, 806274), (315, 691092), (316, 688905), (324, 671895), (378, 575910), (395, 551124), (405, 537516), (420, 518319), (474, 459270), (486, 447930), (540, 403137), (553, 393660), (567, 383940), (630, 345546), (711, 306180), (729, 298620), (756, 287955), (790, 275562), (810, 268758), (945, 230364), (948, 229635), (972, 223965), (1106, 196830), (1134, 191970), (1185, 183708), (1215, 179172), (1260, 172773), (1422, 153090), (1458, 149310), (1580, 137781), (1620, 134379), (1659, 131220), (1701, 127980), (1890, 115182), (2133, 102060), (2187, 99540), (2212, 98415), (2268, 95985), (2370, 91854), (2430, 89586), (2765, 78732), (2835, 76788), (2844, 76545), (2916, 74655), (3318, 65610), (3402, 63990), (3555, 61236), (3645, 59724), (3780, 57591), (4266, 51030), (4374, 49770), (4740, 45927), (4860, 44793), (4977, 43740), (5103, 42660), (5530, 39366), (5670, 38394), (6399, 34020), (6561, 33180), (6636, 32805), (6804, 31995), (7110, 30618), (7290, 29862), (8295, 26244), (8505, 25596), (8532, 25515), (8748, 24885), (9954, 21870), (10206, 21330), (10665, 20412), (10935, 19908), (11060, 19683), (11340, 19197), (12798, 17010), (13122, 16590), (14220, 15309), (14580, 14931)]