21902270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{509}}^1$

素因数の和:860

約数の個数: 32

約数和(自身を含む): 42668640

約数和(自身を除く): 20766370

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 331, 509, 662, 1018, 1655, 2545, 3310, 4303, 5090, 6617, 8606, 13234, 21515, 33085, 43030, 66170, 168479, 336958, 842395, 1684790, 2190227, 4380454, 10951135, 21902270]

約数ペア:

[(1, 21902270), (2, 10951135), (5, 4380454), (10, 2190227), (13, 1684790), (26, 842395), (65, 336958), (130, 168479), (331, 66170), (509, 43030), (662, 33085), (1018, 21515), (1655, 13234), (2545, 8606), (3310, 6617), (4303, 5090)]