8405990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:472

約数の個数: 32

約数和(自身を含む): 16166304

約数和(自身を除く): 7760314

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 197, 251, 394, 502, 985, 1255, 1970, 2510, 3349, 4267, 6698, 8534, 16745, 21335, 33490, 42670, 49447, 98894, 247235, 494470, 840599, 1681198, 4202995, 8405990]

約数ペア:

[(1, 8405990), (2, 4202995), (5, 1681198), (10, 840599), (17, 494470), (34, 247235), (85, 98894), (170, 49447), (197, 42670), (251, 33490), (394, 21335), (502, 16745), (985, 8534), (1255, 6698), (1970, 4267), (2510, 3349)]