21704020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83477}}^1$

素因数の和:83499

約数の個数: 24

約数和(自身を含む): 49085064

約数和(自身を除く): 27381044

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83477, 166954, 333908, 417385, 834770, 1085201, 1669540, 2170402, 4340804, 5426005, 10852010, 21704020]

約数ペア:

[(1, 21704020), (2, 10852010), (4, 5426005), (5, 4340804), (10, 2170402), (13, 1669540), (20, 1085201), (26, 834770), (52, 417385), (65, 333908), (130, 166954), (260, 83477)]