90880840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73291}}^1$

素因数の和:73333

約数の個数: 32

約数和(自身を含む): 211080960

約数和(自身を除く): 120200120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 73291, 146582, 293164, 366455, 586328, 732910, 1465820, 2272021, 2931640, 4544042, 9088084, 11360105, 18176168, 22720210, 45440420, 90880840]

約数ペア:

[(1, 90880840), (2, 45440420), (4, 22720210), (5, 18176168), (8, 11360105), (10, 9088084), (20, 4544042), (31, 2931640), (40, 2272021), (62, 1465820), (124, 732910), (155, 586328), (248, 366455), (310, 293164), (620, 146582), (1240, 73291)]