20319664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{66841}}^1$

素因数の和:66868

約数の個数: 20

約数和(自身を含む): 41442040

約数和(自身を除く): 21122376

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 66841, 133682, 267364, 534728, 1069456, 1269979, 2539958, 5079916, 10159832, 20319664]

約数ペア:

[(1, 20319664), (2, 10159832), (4, 5079916), (8, 2539958), (16, 1269979), (19, 1069456), (38, 534728), (76, 267364), (152, 133682), (304, 66841)]