19402840

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11831}}^1$

素因数の和:11883

約数の個数: 32

約数和(自身を含む): 44724960

約数和(自身を除く): 25322120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11831, 23662, 47324, 59155, 94648, 118310, 236620, 473240, 485071, 970142, 1940284, 2425355, 3880568, 4850710, 9701420, 19402840]

約数ペア:

[(1, 19402840), (2, 9701420), (4, 4850710), (5, 3880568), (8, 2425355), (10, 1940284), (20, 970142), (40, 485071), (41, 473240), (82, 236620), (164, 118310), (205, 94648), (328, 59155), (410, 47324), (820, 23662), (1640, 11831)]