2781980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7321}}^1$

素因数の和:7349

約数の個数: 24

約数和(自身を含む): 6150480

約数和(自身を除く): 3368500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 7321, 14642, 29284, 36605, 73210, 139099, 146420, 278198, 556396, 695495, 1390990, 2781980]

約数ペア:

[(1, 2781980), (2, 1390990), (4, 695495), (5, 556396), (10, 278198), (19, 146420), (20, 139099), (38, 73210), (76, 36605), (95, 29284), (190, 14642), (380, 7321)]