18146890

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 33747840

約数和(自身を除く): 15600950

約数列:

[1, 2, 5, 10, 61, 71, 122, 142, 305, 355, 419, 610, 710, 838, 2095, 4190, 4331, 8662, 21655, 25559, 29749, 43310, 51118, 59498, 127795, 148745, 255590, 297490, 1814689, 3629378, 9073445, 18146890]

約数ペア:

[(1, 18146890), (2, 9073445), (5, 3629378), (10, 1814689), (61, 297490), (71, 255590), (122, 148745), (142, 127795), (305, 59498), (355, 51118), (419, 43310), (610, 29749), (710, 25559), (838, 21655), (2095, 8662), (4190, 4331)]