81230840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49531}}^1$

素因数の和:49583

約数の個数: 32

約数和(自身を含む): 187230960

約数和(自身を除く): 106000120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49531, 99062, 198124, 247655, 396248, 495310, 990620, 1981240, 2030771, 4061542, 8123084, 10153855, 16246168, 20307710, 40615420, 81230840]

約数ペア:

[(1, 81230840), (2, 40615420), (4, 20307710), (5, 16246168), (8, 10153855), (10, 8123084), (20, 4061542), (40, 2030771), (41, 1981240), (82, 990620), (164, 495310), (205, 396248), (328, 247655), (410, 198124), (820, 99062), (1640, 49531)]