21791500

素因数分解:

$2^2\times 5^3\times {\mathrm{41}}^1\times {\mathrm{1063}}^1$

素因数の和:1123

約数の個数: 48

約数和(自身を含む): 48799296

約数和(自身を除く): 27007796

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 125, 164, 205, 250, 410, 500, 820, 1025, 1063, 2050, 2126, 4100, 4252, 5125, 5315, 10250, 10630, 20500, 21260, 26575, 43583, 53150, 87166, 106300, 132875, 174332, 217915, 265750, 435830, 531500, 871660, 1089575, 2179150, 4358300, 5447875, 10895750, 21791500]

約数ペア:

[(1, 21791500), (2, 10895750), (4, 5447875), (5, 4358300), (10, 2179150), (20, 1089575), (25, 871660), (41, 531500), (50, 435830), (82, 265750), (100, 217915), (125, 174332), (164, 132875), (205, 106300), (250, 87166), (410, 53150), (500, 43583), (820, 26575), (1025, 21260), (1063, 20500), (2050, 10630), (2126, 10250), (4100, 5315), (4252, 5125)]