18936995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{487}}^1$

素因数の和:611

約数の個数: 32

約数和(自身を含む): 28670976

約数和(自身を除く): 9733981

約数列:

[1, 5, 7, 11, 35, 55, 77, 101, 385, 487, 505, 707, 1111, 2435, 3409, 3535, 5357, 5555, 7777, 17045, 26785, 37499, 38885, 49187, 187495, 245935, 344309, 541057, 1721545, 2705285, 3787399, 18936995]

約数ペア:

[(1, 18936995), (5, 3787399), (7, 2705285), (11, 1721545), (35, 541057), (55, 344309), (77, 245935), (101, 187495), (385, 49187), (487, 38885), (505, 37499), (707, 26785), (1111, 17045), (2435, 7777), (3409, 5555), (3535, 5357)]