28907960

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1117}}^1$

素因数の和:1775

約数の個数: 32

約数和(自身を含む): 65201760

約数和(自身を除く): 36293800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1117, 1294, 2234, 2588, 3235, 4468, 5176, 5585, 6470, 8936, 11170, 12940, 22340, 25880, 44680, 722699, 1445398, 2890796, 3613495, 5781592, 7226990, 14453980, 28907960]

約数ペア:

[(1, 28907960), (2, 14453980), (4, 7226990), (5, 5781592), (8, 3613495), (10, 2890796), (20, 1445398), (40, 722699), (647, 44680), (1117, 25880), (1294, 22340), (2234, 12940), (2588, 11170), (3235, 8936), (4468, 6470), (5176, 5585)]