21697090

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35569}}^1$

素因数の和:35637

約数の個数: 16

約数和(自身を含む): 39696120

約数和(自身を除く): 17999030

約数列:

[1, 2, 5, 10, 61, 122, 305, 610, 35569, 71138, 177845, 355690, 2169709, 4339418, 10848545, 21697090]

約数ペア:

[(1, 21697090), (2, 10848545), (5, 4339418), (10, 2169709), (61, 355690), (122, 177845), (305, 71138), (610, 35569)]