615980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1621}}^1$

素因数の和:1649

約数の個数: 24

約数和(自身を含む): 1362480

約数和(自身を除く): 746500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1621, 3242, 6484, 8105, 16210, 30799, 32420, 61598, 123196, 153995, 307990, 615980]

約数ペア:

[(1, 615980), (2, 307990), (4, 153995), (5, 123196), (10, 61598), (19, 32420), (20, 30799), (38, 16210), (76, 8105), (95, 6484), (190, 3242), (380, 1621)]