21370250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:456

約数の個数: 64

約数和(自身を含む): 46051200

約数和(自身を除く): 24680950

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 125, 190, 209, 250, 275, 409, 418, 475, 550, 818, 950, 1045, 1375, 2045, 2090, 2375, 2750, 4090, 4499, 4750, 5225, 7771, 8998, 10225, 10450, 15542, 20450, 22495, 26125, 38855, 44990, 51125, 52250, 77710, 85481, 102250, 112475, 170962, 194275, 224950, 388550, 427405, 562375, 854810, 971375, 1124750, 1942750, 2137025, 4274050, 10685125, 21370250]

約数ペア:

[(1, 21370250), (2, 10685125), (5, 4274050), (10, 2137025), (11, 1942750), (19, 1124750), (22, 971375), (25, 854810), (38, 562375), (50, 427405), (55, 388550), (95, 224950), (110, 194275), (125, 170962), (190, 112475), (209, 102250), (250, 85481), (275, 77710), (409, 52250), (418, 51125), (475, 44990), (550, 38855), (818, 26125), (950, 22495), (1045, 20450), (1375, 15542), (2045, 10450), (2090, 10225), (2375, 8998), (2750, 7771), (4090, 5225), (4499, 4750)]