21159910

素因数分解:

$2^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{7477}}^1$

素因数の和:7767

約数の個数: 16

約数和(自身を含む): 38227536

約数和(自身を除く): 17067626

約数列:

[1, 2, 5, 10, 283, 566, 1415, 2830, 7477, 14954, 37385, 74770, 2115991, 4231982, 10579955, 21159910]

約数ペア:

[(1, 21159910), (2, 10579955), (5, 4231982), (10, 2115991), (283, 74770), (566, 37385), (1415, 14954), (2830, 7477)]