81078100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1289}}^1$

素因数の和:1357

約数の個数: 72

約数和(自身を含む): 191472120

約数和(自身を除く): 110394020

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 37, 50, 68, 74, 85, 100, 148, 170, 185, 340, 370, 425, 629, 740, 850, 925, 1258, 1289, 1700, 1850, 2516, 2578, 3145, 3700, 5156, 6290, 6445, 12580, 12890, 15725, 21913, 25780, 31450, 32225, 43826, 47693, 62900, 64450, 87652, 95386, 109565, 128900, 190772, 219130, 238465, 438260, 476930, 547825, 810781, 953860, 1095650, 1192325, 1621562, 2191300, 2384650, 3243124, 4053905, 4769300, 8107810, 16215620, 20269525, 40539050, 81078100]

約数ペア:

[(1, 81078100), (2, 40539050), (4, 20269525), (5, 16215620), (10, 8107810), (17, 4769300), (20, 4053905), (25, 3243124), (34, 2384650), (37, 2191300), (50, 1621562), (68, 1192325), (74, 1095650), (85, 953860), (100, 810781), (148, 547825), (170, 476930), (185, 438260), (340, 238465), (370, 219130), (425, 190772), (629, 128900), (740, 109565), (850, 95386), (925, 87652), (1258, 64450), (1289, 62900), (1700, 47693), (1850, 43826), (2516, 32225), (2578, 31450), (3145, 25780), (3700, 21913), (5156, 15725), (6290, 12890), (6445, 12580)]