21926260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64489}}^1$

素因数の和:64515

約数の個数: 24

約数和(自身を含む): 48754440

約数和(自身を除く): 26828180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64489, 128978, 257956, 322445, 644890, 1096313, 1289780, 2192626, 4385252, 5481565, 10963130, 21926260]

約数ペア:

[(1, 21926260), (2, 10963130), (4, 5481565), (5, 4385252), (10, 2192626), (17, 1289780), (20, 1096313), (34, 644890), (68, 322445), (85, 257956), (170, 128978), (340, 64489)]