81620520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{593}}^1$

素因数の和:675

約数の個数: 128

約数和(自身を含む): 260029440

約数和(自身を除く): 178408920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 37, 40, 60, 62, 74, 93, 111, 120, 124, 148, 155, 185, 186, 222, 248, 296, 310, 370, 372, 444, 465, 555, 593, 620, 740, 744, 888, 930, 1110, 1147, 1186, 1240, 1480, 1779, 1860, 2220, 2294, 2372, 2965, 3441, 3558, 3720, 4440, 4588, 4744, 5735, 5930, 6882, 7116, 8895, 9176, 11470, 11860, 13764, 14232, 17205, 17790, 18383, 21941, 22940, 23720, 27528, 34410, 35580, 36766, 43882, 45880, 55149, 65823, 68820, 71160, 73532, 87764, 91915, 109705, 110298, 131646, 137640, 147064, 175528, 183830, 219410, 220596, 263292, 275745, 329115, 367660, 438820, 441192, 526584, 551490, 658230, 680171, 735320, 877640, 1102980, 1316460, 1360342, 2040513, 2205960, 2632920, 2720684, 3400855, 4081026, 5441368, 6801710, 8162052, 10202565, 13603420, 16324104, 20405130, 27206840, 40810260, 81620520]

約数ペア:

[(1, 81620520), (2, 40810260), (3, 27206840), (4, 20405130), (5, 16324104), (6, 13603420), (8, 10202565), (10, 8162052), (12, 6801710), (15, 5441368), (20, 4081026), (24, 3400855), (30, 2720684), (31, 2632920), (37, 2205960), (40, 2040513), (60, 1360342), (62, 1316460), (74, 1102980), (93, 877640), (111, 735320), (120, 680171), (124, 658230), (148, 551490), (155, 526584), (185, 441192), (186, 438820), (222, 367660), (248, 329115), (296, 275745), (310, 263292), (370, 220596), (372, 219410), (444, 183830), (465, 175528), (555, 147064), (593, 137640), (620, 131646), (740, 110298), (744, 109705), (888, 91915), (930, 87764), (1110, 73532), (1147, 71160), (1186, 68820), (1240, 65823), (1480, 55149), (1779, 45880), (1860, 43882), (2220, 36766), (2294, 35580), (2372, 34410), (2965, 27528), (3441, 23720), (3558, 22940), (3720, 21941), (4440, 18383), (4588, 17790), (4744, 17205), (5735, 14232), (5930, 13764), (6882, 11860), (7116, 11470), (8895, 9176)]