21543500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{3917}}^1$

素因数の和:3947

約数の個数: 48

約数和(自身を含む): 51341472

約数和(自身を除く): 29797972

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 125, 220, 250, 275, 500, 550, 1100, 1375, 2750, 3917, 5500, 7834, 15668, 19585, 39170, 43087, 78340, 86174, 97925, 172348, 195850, 215435, 391700, 430870, 489625, 861740, 979250, 1077175, 1958500, 2154350, 4308700, 5385875, 10771750, 21543500]

約数ペア:

[(1, 21543500), (2, 10771750), (4, 5385875), (5, 4308700), (10, 2154350), (11, 1958500), (20, 1077175), (22, 979250), (25, 861740), (44, 489625), (50, 430870), (55, 391700), (100, 215435), (110, 195850), (125, 172348), (220, 97925), (250, 86174), (275, 78340), (500, 43087), (550, 39170), (1100, 19585), (1375, 15668), (2750, 7834), (3917, 5500)]