20199140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77689}}^1$

素因数の和:77711

約数の個数: 24

約数和(自身を含む): 45681720

約数和(自身を除く): 25482580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77689, 155378, 310756, 388445, 776890, 1009957, 1553780, 2019914, 4039828, 5049785, 10099570, 20199140]

約数ペア:

[(1, 20199140), (2, 10099570), (4, 5049785), (5, 4039828), (10, 2019914), (13, 1553780), (20, 1009957), (26, 776890), (52, 388445), (65, 310756), (130, 155378), (260, 77689)]