21322340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{82009}}^1$

素因数の和:82031

約数の個数: 24

約数和(自身を含む): 48221880

約数和(自身を除く): 26899540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 82009, 164018, 328036, 410045, 820090, 1066117, 1640180, 2132234, 4264468, 5330585, 10661170, 21322340]

約数ペア:

[(1, 21322340), (2, 10661170), (4, 5330585), (5, 4264468), (10, 2132234), (13, 1640180), (20, 1066117), (26, 820090), (52, 410045), (65, 328036), (130, 164018), (260, 82009)]