21905000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{337}}^1$

素因数の和:376

約数の個数: 80

約数和(自身を含む): 55435380

約数和(自身を除く): 33530380

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 337, 500, 520, 625, 650, 674, 1000, 1250, 1300, 1348, 1625, 1685, 2500, 2600, 2696, 3250, 3370, 4381, 5000, 6500, 6740, 8125, 8425, 8762, 13000, 13480, 16250, 16850, 17524, 21905, 32500, 33700, 35048, 42125, 43810, 65000, 67400, 84250, 87620, 109525, 168500, 175240, 210625, 219050, 337000, 421250, 438100, 547625, 842500, 876200, 1095250, 1685000, 2190500, 2738125, 4381000, 5476250, 10952500, 21905000]

約数ペア:

[(1, 21905000), (2, 10952500), (4, 5476250), (5, 4381000), (8, 2738125), (10, 2190500), (13, 1685000), (20, 1095250), (25, 876200), (26, 842500), (40, 547625), (50, 438100), (52, 421250), (65, 337000), (100, 219050), (104, 210625), (125, 175240), (130, 168500), (200, 109525), (250, 87620), (260, 84250), (325, 67400), (337, 65000), (500, 43810), (520, 42125), (625, 35048), (650, 33700), (674, 32500), (1000, 21905), (1250, 17524), (1300, 16850), (1348, 16250), (1625, 13480), (1685, 13000), (2500, 8762), (2600, 8425), (2696, 8125), (3250, 6740), (3370, 6500), (4381, 5000)]