21491132

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5821}}^1$

素因数の和:5909

約数の個数: 24

約数和(自身を含む): 41080032

約数和(自身を除く): 19588900

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5821, 11642, 23284, 75673, 151346, 302692, 413291, 826582, 1653164, 5372783, 10745566, 21491132]

約数ペア:

[(1, 21491132), (2, 10745566), (4, 5372783), (13, 1653164), (26, 826582), (52, 413291), (71, 302692), (142, 151346), (284, 75673), (923, 23284), (1846, 11642), (3692, 5821)]