21493504825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{509}}^1\times {\mathrm{3169}}^1$

素因数の和:3742

約数の個数: 48

約数和(自身を含む): 29469207600

約数和(自身を除く): 7975702775

約数列:

[1, 5, 13, 25, 41, 65, 205, 325, 509, 533, 1025, 2545, 2665, 3169, 6617, 12725, 13325, 15845, 20869, 33085, 41197, 79225, 104345, 129929, 165425, 205985, 271297, 521725, 649645, 1029925, 1356485, 1613021, 1689077, 3248225, 6782425, 8065105, 8445385, 20969273, 40325525, 42226925, 66133861, 104846365, 330669305, 524231825, 859740193, 1653346525, 4298700965, 21493504825]

約数ペア:

[(1, 21493504825), (5, 4298700965), (13, 1653346525), (25, 859740193), (41, 524231825), (65, 330669305), (205, 104846365), (325, 66133861), (509, 42226925), (533, 40325525), (1025, 20969273), (2545, 8445385), (2665, 8065105), (3169, 6782425), (6617, 3248225), (12725, 1689077), (13325, 1613021), (15845, 1356485), (20869, 1029925), (33085, 649645), (41197, 521725), (79225, 271297), (104345, 205985), (129929, 165425)]