128791840

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5791}}^1$

素因数の和:5945

約数の個数: 48

約数和(自身を含む): 306512640

約数和(自身を除く): 177720800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 2224, 2780, 4448, 5560, 5791, 11120, 11582, 22240, 23164, 28955, 46328, 57910, 92656, 115820, 185312, 231640, 463280, 804949, 926560, 1609898, 3219796, 4024745, 6439592, 8049490, 12879184, 16098980, 25758368, 32197960, 64395920, 128791840]

約数ペア:

[(1, 128791840), (2, 64395920), (4, 32197960), (5, 25758368), (8, 16098980), (10, 12879184), (16, 8049490), (20, 6439592), (32, 4024745), (40, 3219796), (80, 1609898), (139, 926560), (160, 804949), (278, 463280), (556, 231640), (695, 185312), (1112, 115820), (1390, 92656), (2224, 57910), (2780, 46328), (4448, 28955), (5560, 23164), (5791, 22240), (11120, 11582)]