80811250

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{4973}}^1$

素因数の和:5008

約数の個数: 40

約数和(自身を含む): 163157148

約数和(自身を除く): 82345898

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1625, 3250, 4973, 8125, 9946, 16250, 24865, 49730, 64649, 124325, 129298, 248650, 323245, 621625, 646490, 1243250, 1616225, 3108125, 3232450, 6216250, 8081125, 16162250, 40405625, 80811250]

約数ペア:

[(1, 80811250), (2, 40405625), (5, 16162250), (10, 8081125), (13, 6216250), (25, 3232450), (26, 3108125), (50, 1616225), (65, 1243250), (125, 646490), (130, 621625), (250, 323245), (325, 248650), (625, 129298), (650, 124325), (1250, 64649), (1625, 49730), (3250, 24865), (4973, 16250), (8125, 9946)]