28256840

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9677}}^1$

素因数の和:9761

約数の個数: 32

約数和(自身を含む): 64455480

約数和(自身を除く): 36198640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 9677, 19354, 38708, 48385, 77416, 96770, 193540, 387080, 706421, 1412842, 2825684, 3532105, 5651368, 7064210, 14128420, 28256840]

約数ペア:

[(1, 28256840), (2, 14128420), (4, 7064210), (5, 5651368), (8, 3532105), (10, 2825684), (20, 1412842), (40, 706421), (73, 387080), (146, 193540), (292, 96770), (365, 77416), (584, 48385), (730, 38708), (1460, 19354), (2920, 9677)]