205312510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1\times {\mathrm{2441}}^1$

素因数の和:3108

約数の個数: 32

約数和(自身を含む): 398768832

約数和(自身を除く): 193456322

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 647, 1294, 2441, 3235, 4882, 6470, 8411, 12205, 16822, 24410, 31733, 42055, 63466, 84110, 158665, 317330, 1579327, 3158654, 7896635, 15793270, 20531251, 41062502, 102656255, 205312510]

約数ペア:

[(1, 205312510), (2, 102656255), (5, 41062502), (10, 20531251), (13, 15793270), (26, 7896635), (65, 3158654), (130, 1579327), (647, 317330), (1294, 158665), (2441, 84110), (3235, 63466), (4882, 42055), (6470, 31733), (8411, 24410), (12205, 16822)]