21235370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{379}}^1\times {\mathrm{431}}^1$

素因数の和:830

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20132950

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 379, 431, 758, 862, 1895, 2155, 3790, 4310, 4927, 5603, 9854, 11206, 24635, 28015, 49270, 56030, 163349, 326698, 816745, 1633490, 2123537, 4247074, 10617685, 21235370]

約数ペア:

[(1, 21235370), (2, 10617685), (5, 4247074), (10, 2123537), (13, 1633490), (26, 816745), (65, 326698), (130, 163349), (379, 56030), (431, 49270), (758, 28015), (862, 24635), (1895, 11206), (2155, 9854), (3790, 5603), (4310, 4927)]