19540400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4441}}^1$

素因数の和:4470

約数の個数: 60

約数和(自身を含む): 51225144

約数和(自身を除く): 31684744

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4441, 8882, 17764, 22205, 35528, 44410, 48851, 71056, 88820, 97702, 111025, 177640, 195404, 222050, 244255, 355280, 390808, 444100, 488510, 781616, 888200, 977020, 1221275, 1776400, 1954040, 2442550, 3908080, 4885100, 9770200, 19540400]

約数ペア:

[(1, 19540400), (2, 9770200), (4, 4885100), (5, 3908080), (8, 2442550), (10, 1954040), (11, 1776400), (16, 1221275), (20, 977020), (22, 888200), (25, 781616), (40, 488510), (44, 444100), (50, 390808), (55, 355280), (80, 244255), (88, 222050), (100, 195404), (110, 177640), (176, 111025), (200, 97702), (220, 88820), (275, 71056), (400, 48851), (440, 44410), (550, 35528), (880, 22205), (1100, 17764), (2200, 8882), (4400, 4441)]