21319610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163997}}^1$

素因数の和:164017

約数の個数: 16

約数和(自身を含む): 41327496

約数和(自身を除く): 20007886

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 163997, 327994, 819985, 1639970, 2131961, 4263922, 10659805, 21319610]

約数ペア:

[(1, 21319610), (2, 10659805), (5, 4263922), (10, 2131961), (13, 1639970), (26, 819985), (65, 327994), (130, 163997)]