21857480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{17627}}^1$

素因数の和:17669

約数の個数: 32

約数和(自身を含む): 50768640

約数和(自身を除く): 28911160

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 17627, 35254, 70508, 88135, 141016, 176270, 352540, 546437, 705080, 1092874, 2185748, 2732185, 4371496, 5464370, 10928740, 21857480]

約数ペア:

[(1, 21857480), (2, 10928740), (4, 5464370), (5, 4371496), (8, 2732185), (10, 2185748), (20, 1092874), (31, 705080), (40, 546437), (62, 352540), (124, 176270), (155, 141016), (248, 88135), (310, 70508), (620, 35254), (1240, 17627)]