21755500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3347}}^1$

素因数の和:3379

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 29428724

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3250, 3347, 6500, 6694, 13388, 16735, 33470, 43511, 66940, 83675, 87022, 167350, 174044, 217555, 334700, 418375, 435110, 836750, 870220, 1087775, 1673500, 2175550, 4351100, 5438875, 10877750, 21755500]

約数ペア:

[(1, 21755500), (2, 10877750), (4, 5438875), (5, 4351100), (10, 2175550), (13, 1673500), (20, 1087775), (25, 870220), (26, 836750), (50, 435110), (52, 418375), (65, 334700), (100, 217555), (125, 174044), (130, 167350), (250, 87022), (260, 83675), (325, 66940), (500, 43511), (650, 33470), (1300, 16735), (1625, 13388), (3250, 6694), (3347, 6500)]