20215905

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{797}}^1$

素因数の和:913

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 14257695

約数列:

[1, 3, 5, 15, 19, 57, 89, 95, 267, 285, 445, 797, 1335, 1691, 2391, 3985, 5073, 8455, 11955, 15143, 25365, 45429, 70933, 75715, 212799, 227145, 354665, 1063995, 1347727, 4043181, 6738635, 20215905]

約数ペア:

[(1, 20215905), (3, 6738635), (5, 4043181), (15, 1347727), (19, 1063995), (57, 354665), (89, 227145), (95, 212799), (267, 75715), (285, 70933), (445, 45429), (797, 25365), (1335, 15143), (1691, 11955), (2391, 8455), (3985, 5073)]