80217500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{2917}}^1$

素因数の和:2952

約数の個数: 60

約数和(自身を含む): 191432472

約数和(自身を除く): 111214972

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 625, 1100, 1250, 1375, 2500, 2750, 2917, 5500, 5834, 6875, 11668, 13750, 14585, 27500, 29170, 32087, 58340, 64174, 72925, 128348, 145850, 160435, 291700, 320870, 364625, 641740, 729250, 802175, 1458500, 1604350, 1823125, 3208700, 3646250, 4010875, 7292500, 8021750, 16043500, 20054375, 40108750, 80217500]

約数ペア:

[(1, 80217500), (2, 40108750), (4, 20054375), (5, 16043500), (10, 8021750), (11, 7292500), (20, 4010875), (22, 3646250), (25, 3208700), (44, 1823125), (50, 1604350), (55, 1458500), (100, 802175), (110, 729250), (125, 641740), (220, 364625), (250, 320870), (275, 291700), (500, 160435), (550, 145850), (625, 128348), (1100, 72925), (1250, 64174), (1375, 58340), (2500, 32087), (2750, 29170), (2917, 27500), (5500, 14585), (5834, 13750), (6875, 11668)]