19693640

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4357}}^1$

素因数の和:4481

約数の個数: 32

約数和(自身を含む): 44713080

約数和(自身を除く): 25019440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4357, 4520, 8714, 17428, 21785, 34856, 43570, 87140, 174280, 492341, 984682, 1969364, 2461705, 3938728, 4923410, 9846820, 19693640]

約数ペア:

[(1, 19693640), (2, 9846820), (4, 4923410), (5, 3938728), (8, 2461705), (10, 1969364), (20, 984682), (40, 492341), (113, 174280), (226, 87140), (452, 43570), (565, 34856), (904, 21785), (1130, 17428), (2260, 8714), (4357, 4520)]