421940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{73}}^1$

素因数の和:116

約数の個数: 36

約数和(自身を含む): 954156

約数和(自身を除く): 532216

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 289, 292, 340, 365, 578, 730, 1156, 1241, 1445, 1460, 2482, 2890, 4964, 5780, 6205, 12410, 21097, 24820, 42194, 84388, 105485, 210970, 421940]

約数ペア:

[(1, 421940), (2, 210970), (4, 105485), (5, 84388), (10, 42194), (17, 24820), (20, 21097), (34, 12410), (68, 6205), (73, 5780), (85, 4964), (146, 2890), (170, 2482), (289, 1460), (292, 1445), (340, 1241), (365, 1156), (578, 730)]