90959990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{3919}}^1$

素因数の和:4148

約数の個数: 32

約数和(自身を含む): 179504640

約数和(自身を除く): 88544650

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 211, 422, 1055, 2110, 2321, 3919, 4642, 7838, 11605, 19595, 23210, 39190, 43109, 86218, 215545, 431090, 826909, 1653818, 4134545, 8269090, 9095999, 18191998, 45479995, 90959990]

約数ペア:

[(1, 90959990), (2, 45479995), (5, 18191998), (10, 9095999), (11, 8269090), (22, 4134545), (55, 1653818), (110, 826909), (211, 431090), (422, 215545), (1055, 86218), (2110, 43109), (2321, 39190), (3919, 23210), (4642, 19595), (7838, 11605)]