15550120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6373}}^1$

素因数の和:6445

約数の個数: 32

約数和(自身を含む): 35566920

約数和(自身を除く): 20016800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6373, 12746, 25492, 31865, 50984, 63730, 127460, 254920, 388753, 777506, 1555012, 1943765, 3110024, 3887530, 7775060, 15550120]

約数ペア:

[(1, 15550120), (2, 7775060), (4, 3887530), (5, 3110024), (8, 1943765), (10, 1555012), (20, 777506), (40, 388753), (61, 254920), (122, 127460), (244, 63730), (305, 50984), (488, 31865), (610, 25492), (1220, 12746), (2440, 6373)]