81809360

素因数分解:

$2^4\times 5^1\times {\mathrm{307}}^1\times {\mathrm{3331}}^1$

素因数の和:3651

約数の個数: 40

約数和(自身を含む): 190883616

約数和(自身を除く): 109074256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 307, 614, 1228, 1535, 2456, 3070, 3331, 4912, 6140, 6662, 12280, 13324, 16655, 24560, 26648, 33310, 53296, 66620, 133240, 266480, 1022617, 2045234, 4090468, 5113085, 8180936, 10226170, 16361872, 20452340, 40904680, 81809360]

約数ペア:

[(1, 81809360), (2, 40904680), (4, 20452340), (5, 16361872), (8, 10226170), (10, 8180936), (16, 5113085), (20, 4090468), (40, 2045234), (80, 1022617), (307, 266480), (614, 133240), (1228, 66620), (1535, 53296), (2456, 33310), (3070, 26648), (3331, 24560), (4912, 16655), (6140, 13324), (6662, 12280)]