197949980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{520921}}^1$

素因数の和:520949

約数の個数: 24

約数和(自身を含む): 437574480

約数和(自身を除く): 239624500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 520921, 1041842, 2083684, 2604605, 5209210, 9897499, 10418420, 19794998, 39589996, 49487495, 98974990, 197949980]

約数ペア:

[(1, 197949980), (2, 98974990), (4, 49487495), (5, 39589996), (10, 19794998), (19, 10418420), (20, 9897499), (38, 5209210), (76, 2604605), (95, 2083684), (190, 1041842), (380, 520921)]