20164445

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{677}}^1$

素因数の和:749

約数の個数: 32

約数和(自身を含む): 29680128

約数和(自身を除く): 9515683

約数列:

[1, 5, 7, 23, 35, 37, 115, 161, 185, 259, 677, 805, 851, 1295, 3385, 4255, 4739, 5957, 15571, 23695, 25049, 29785, 77855, 108997, 125245, 175343, 544985, 576127, 876715, 2880635, 4032889, 20164445]

約数ペア:

[(1, 20164445), (5, 4032889), (7, 2880635), (23, 876715), (35, 576127), (37, 544985), (115, 175343), (161, 125245), (185, 108997), (259, 77855), (677, 29785), (805, 25049), (851, 23695), (1295, 15571), (3385, 5957), (4255, 4739)]