81805590

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:422

約数の個数: 96

約数和(自身を含む): 222393600

約数和(自身を除く): 140588010

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 109, 155, 186, 218, 269, 279, 310, 327, 465, 538, 545, 558, 654, 807, 930, 981, 1090, 1345, 1395, 1614, 1635, 1962, 2421, 2690, 2790, 3270, 3379, 4035, 4842, 4905, 6758, 8070, 8339, 9810, 10137, 12105, 16678, 16895, 20274, 24210, 25017, 29321, 30411, 33790, 41695, 50034, 50685, 58642, 60822, 75051, 83390, 87963, 101370, 125085, 146605, 150102, 152055, 175926, 250170, 263889, 293210, 304110, 375255, 439815, 527778, 750510, 879630, 908951, 1319445, 1817902, 2638890, 2726853, 4544755, 5453706, 8180559, 9089510, 13634265, 16361118, 27268530, 40902795, 81805590]

約数ペア:

[(1, 81805590), (2, 40902795), (3, 27268530), (5, 16361118), (6, 13634265), (9, 9089510), (10, 8180559), (15, 5453706), (18, 4544755), (30, 2726853), (31, 2638890), (45, 1817902), (62, 1319445), (90, 908951), (93, 879630), (109, 750510), (155, 527778), (186, 439815), (218, 375255), (269, 304110), (279, 293210), (310, 263889), (327, 250170), (465, 175926), (538, 152055), (545, 150102), (558, 146605), (654, 125085), (807, 101370), (930, 87963), (981, 83390), (1090, 75051), (1345, 60822), (1395, 58642), (1614, 50685), (1635, 50034), (1962, 41695), (2421, 33790), (2690, 30411), (2790, 29321), (3270, 25017), (3379, 24210), (4035, 20274), (4842, 16895), (4905, 16678), (6758, 12105), (8070, 10137), (8339, 9810)]