20131020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1264

約数の個数: 144

約数和(自身を含む): 75216960

約数和(自身を除く): 55085940

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1229, 1260, 1365, 1638, 1820, 2340, 2458, 2730, 3276, 3687, 4095, 4916, 5460, 6145, 7374, 8190, 8603, 11061, 12290, 14748, 15977, 16380, 17206, 18435, 22122, 24580, 25809, 31954, 34412, 36870, 43015, 44244, 47931, 51618, 55305, 63908, 73740, 77427, 79885, 86030, 95862, 103236, 110610, 111839, 129045, 143793, 154854, 159770, 172060, 191724, 221220, 223678, 239655, 258090, 287586, 309708, 319540, 335517, 387135, 447356, 479310, 516180, 559195, 575172, 671034, 718965, 774270, 958620, 1006551, 1118390, 1342068, 1437930, 1548540, 1677585, 2013102, 2236780, 2875860, 3355170, 4026204, 5032755, 6710340, 10065510, 20131020]

約数ペア:

[(1, 20131020), (2, 10065510), (3, 6710340), (4, 5032755), (5, 4026204), (6, 3355170), (7, 2875860), (9, 2236780), (10, 2013102), (12, 1677585), (13, 1548540), (14, 1437930), (15, 1342068), (18, 1118390), (20, 1006551), (21, 958620), (26, 774270), (28, 718965), (30, 671034), (35, 575172), (36, 559195), (39, 516180), (42, 479310), (45, 447356), (52, 387135), (60, 335517), (63, 319540), (65, 309708), (70, 287586), (78, 258090), (84, 239655), (90, 223678), (91, 221220), (105, 191724), (117, 172060), (126, 159770), (130, 154854), (140, 143793), (156, 129045), (180, 111839), (182, 110610), (195, 103236), (210, 95862), (234, 86030), (252, 79885), (260, 77427), (273, 73740), (315, 63908), (364, 55305), (390, 51618), (420, 47931), (455, 44244), (468, 43015), (546, 36870), (585, 34412), (630, 31954), (780, 25809), (819, 24580), (910, 22122), (1092, 18435), (1170, 17206), (1229, 16380), (1260, 15977), (1365, 14748), (1638, 12290), (1820, 11061), (2340, 8603), (2458, 8190), (2730, 7374), (3276, 6145), (3687, 5460), (4095, 4916)]