20951250

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:213

約数の個数: 80

約数和(自身を含む): 54132672

約数和(自身を除く): 33181422

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 37, 50, 74, 75, 111, 125, 150, 151, 185, 222, 250, 302, 370, 375, 453, 555, 625, 750, 755, 906, 925, 1110, 1250, 1510, 1850, 1875, 2265, 2775, 3750, 3775, 4530, 4625, 5550, 5587, 7550, 9250, 11174, 11325, 13875, 16761, 18875, 22650, 23125, 27750, 27935, 33522, 37750, 46250, 55870, 56625, 69375, 83805, 94375, 113250, 138750, 139675, 167610, 188750, 279350, 283125, 419025, 566250, 698375, 838050, 1396750, 2095125, 3491875, 4190250, 6983750, 10475625, 20951250]

約数ペア:

[(1, 20951250), (2, 10475625), (3, 6983750), (5, 4190250), (6, 3491875), (10, 2095125), (15, 1396750), (25, 838050), (30, 698375), (37, 566250), (50, 419025), (74, 283125), (75, 279350), (111, 188750), (125, 167610), (150, 139675), (151, 138750), (185, 113250), (222, 94375), (250, 83805), (302, 69375), (370, 56625), (375, 55870), (453, 46250), (555, 37750), (625, 33522), (750, 27935), (755, 27750), (906, 23125), (925, 22650), (1110, 18875), (1250, 16761), (1510, 13875), (1850, 11325), (1875, 11174), (2265, 9250), (2775, 7550), (3750, 5587), (3775, 5550), (4530, 4625)]