3991250

素因数分解:

$2^1\times 5^4\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:156

約数の個数: 40

約数和(自身を含む): 7797504

約数和(自身を除く): 3806254

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 103, 125, 155, 206, 250, 310, 515, 625, 775, 1030, 1250, 1550, 2575, 3193, 3875, 5150, 6386, 7750, 12875, 15965, 19375, 25750, 31930, 38750, 64375, 79825, 128750, 159650, 399125, 798250, 1995625, 3991250]

約数ペア:

[(1, 3991250), (2, 1995625), (5, 798250), (10, 399125), (25, 159650), (31, 128750), (50, 79825), (62, 64375), (103, 38750), (125, 31930), (155, 25750), (206, 19375), (250, 15965), (310, 12875), (515, 7750), (625, 6386), (775, 5150), (1030, 3875), (1250, 3193), (1550, 2575)]