287798980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{2055707}}^1$

素因数の和:2055723

約数の個数: 24

約数和(自身を含む): 690717888

約数和(自身を除く): 402918908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 2055707, 4111414, 8222828, 10278535, 14389949, 20557070, 28779898, 41114140, 57559796, 71949745, 143899490, 287798980]

約数ペア:

[(1, 287798980), (2, 143899490), (4, 71949745), (5, 57559796), (7, 41114140), (10, 28779898), (14, 20557070), (20, 14389949), (28, 10278535), (35, 8222828), (70, 4111414), (140, 2055707)]