28471640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{22961}}^1$

素因数の和:23003

約数の個数: 32

約数和(自身を含む): 66130560

約数和(自身を除く): 37658920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 22961, 45922, 91844, 114805, 183688, 229610, 459220, 711791, 918440, 1423582, 2847164, 3558955, 5694328, 7117910, 14235820, 28471640]

約数ペア:

[(1, 28471640), (2, 14235820), (4, 7117910), (5, 5694328), (8, 3558955), (10, 2847164), (20, 1423582), (31, 918440), (40, 711791), (62, 459220), (124, 229610), (155, 183688), (248, 114805), (310, 91844), (620, 45922), (1240, 22961)]