21850970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70487}}^1$

素因数の和:70525

約数の個数: 16

約数和(自身を含む): 40601088

約数和(自身を除く): 18750118

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 70487, 140974, 352435, 704870, 2185097, 4370194, 10925485, 21850970]

約数ペア:

[(1, 21850970), (2, 10925485), (5, 4370194), (10, 2185097), (31, 704870), (62, 352435), (155, 140974), (310, 70487)]