21019154396

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{827}}^1\times {\mathrm{334423}}^1$

素因数の和:335273

約数の個数: 24

約数和(自身を含む): 38766430080

約数和(自身を除く): 17747275684

約数列:

[1, 2, 4, 19, 38, 76, 827, 1654, 3308, 15713, 31426, 62852, 334423, 668846, 1337692, 6354037, 12708074, 25416148, 276567821, 553135642, 1106271284, 5254788599, 10509577198, 21019154396]

約数ペア:

[(1, 21019154396), (2, 10509577198), (4, 5254788599), (19, 1106271284), (38, 553135642), (76, 276567821), (827, 25416148), (1654, 12708074), (3308, 6354037), (15713, 1337692), (31426, 668846), (62852, 334423)]