19877990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{9511}}^1$

素因数の和:9548

約数の個数: 32

約数和(自身を含む): 41091840

約数和(自身を除く): 21213850

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 418, 1045, 2090, 9511, 19022, 47555, 95110, 104621, 180709, 209242, 361418, 523105, 903545, 1046210, 1807090, 1987799, 3975598, 9938995, 19877990]

約数ペア:

[(1, 19877990), (2, 9938995), (5, 3975598), (10, 1987799), (11, 1807090), (19, 1046210), (22, 903545), (38, 523105), (55, 361418), (95, 209242), (110, 180709), (190, 104621), (209, 95110), (418, 47555), (1045, 19022), (2090, 9511)]