19878760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45179}}^1$

素因数の和:45201

約数の個数: 32

約数和(自身を含む): 48794400

約数和(自身を除く): 28915640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45179, 90358, 180716, 225895, 361432, 451790, 496969, 903580, 993938, 1807160, 1987876, 2484845, 3975752, 4969690, 9939380, 19878760]

約数ペア:

[(1, 19878760), (2, 9939380), (4, 4969690), (5, 3975752), (8, 2484845), (10, 1987876), (11, 1807160), (20, 993938), (22, 903580), (40, 496969), (44, 451790), (55, 361432), (88, 225895), (110, 180716), (220, 90358), (440, 45179)]