81285480

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:208

約数の個数: 192

約数和(自身を含む): 277992000

約数和(自身を除く): 196706520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 43, 45, 59, 60, 72, 86, 89, 90, 118, 120, 129, 172, 177, 178, 180, 215, 236, 258, 267, 295, 344, 354, 356, 360, 387, 430, 445, 472, 516, 531, 534, 590, 645, 708, 712, 774, 801, 860, 885, 890, 1032, 1062, 1068, 1180, 1290, 1335, 1416, 1548, 1602, 1720, 1770, 1780, 1935, 2124, 2136, 2360, 2537, 2580, 2655, 2670, 3096, 3204, 3540, 3560, 3827, 3870, 4005, 4248, 5074, 5160, 5251, 5310, 5340, 6408, 7080, 7611, 7654, 7740, 8010, 10148, 10502, 10620, 10680, 11481, 12685, 15222, 15308, 15480, 15753, 16020, 19135, 20296, 21004, 21240, 22833, 22962, 25370, 26255, 30444, 30616, 31506, 32040, 34443, 38055, 38270, 42008, 45666, 45924, 47259, 50740, 52510, 57405, 60888, 63012, 68886, 76110, 76540, 78765, 91332, 91848, 94518, 101480, 105020, 114165, 114810, 126024, 137772, 152220, 153080, 157530, 172215, 182664, 189036, 210040, 225793, 228330, 229620, 236295, 275544, 304440, 315060, 344430, 378072, 451586, 456660, 459240, 472590, 630120, 677379, 688860, 903172, 913320, 945180, 1128965, 1354758, 1377720, 1806344, 1890360, 2032137, 2257930, 2709516, 3386895, 4064274, 4515860, 5419032, 6773790, 8128548, 9031720, 10160685, 13547580, 16257096, 20321370, 27095160, 40642740, 81285480]

約数ペア:

[(1, 81285480), (2, 40642740), (3, 27095160), (4, 20321370), (5, 16257096), (6, 13547580), (8, 10160685), (9, 9031720), (10, 8128548), (12, 6773790), (15, 5419032), (18, 4515860), (20, 4064274), (24, 3386895), (30, 2709516), (36, 2257930), (40, 2032137), (43, 1890360), (45, 1806344), (59, 1377720), (60, 1354758), (72, 1128965), (86, 945180), (89, 913320), (90, 903172), (118, 688860), (120, 677379), (129, 630120), (172, 472590), (177, 459240), (178, 456660), (180, 451586), (215, 378072), (236, 344430), (258, 315060), (267, 304440), (295, 275544), (344, 236295), (354, 229620), (356, 228330), (360, 225793), (387, 210040), (430, 189036), (445, 182664), (472, 172215), (516, 157530), (531, 153080), (534, 152220), (590, 137772), (645, 126024), (708, 114810), (712, 114165), (774, 105020), (801, 101480), (860, 94518), (885, 91848), (890, 91332), (1032, 78765), (1062, 76540), (1068, 76110), (1180, 68886), (1290, 63012), (1335, 60888), (1416, 57405), (1548, 52510), (1602, 50740), (1720, 47259), (1770, 45924), (1780, 45666), (1935, 42008), (2124, 38270), (2136, 38055), (2360, 34443), (2537, 32040), (2580, 31506), (2655, 30616), (2670, 30444), (3096, 26255), (3204, 25370), (3540, 22962), (3560, 22833), (3827, 21240), (3870, 21004), (4005, 20296), (4248, 19135), (5074, 16020), (5160, 15753), (5251, 15480), (5310, 15308), (5340, 15222), (6408, 12685), (7080, 11481), (7611, 10680), (7654, 10620), (7740, 10502), (8010, 10148)]