291267920

素因数分解:

$2^4\times 5^1\times {\mathrm{3640849}}^1$

素因数の和:3640862

約数の個数: 20

約数和(自身を含む): 677198100

約数和(自身を除く): 385930180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3640849, 7281698, 14563396, 18204245, 29126792, 36408490, 58253584, 72816980, 145633960, 291267920]

約数ペア:

[(1, 291267920), (2, 145633960), (4, 72816980), (5, 58253584), (8, 36408490), (10, 29126792), (16, 18204245), (20, 14563396), (40, 7281698), (80, 3640849)]