20535515

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{373}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 33426624

約数和(自身を除く): 12891109

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 121, 143, 373, 385, 455, 605, 715, 847, 1001, 1573, 1865, 2611, 4103, 4235, 4849, 5005, 7865, 11011, 13055, 20515, 24245, 28721, 33943, 45133, 53339, 55055, 143605, 169715, 225665, 266695, 315931, 373373, 586729, 1579655, 1866865, 2933645, 4107103, 20535515]

約数ペア:

[(1, 20535515), (5, 4107103), (7, 2933645), (11, 1866865), (13, 1579655), (35, 586729), (55, 373373), (65, 315931), (77, 266695), (91, 225665), (121, 169715), (143, 143605), (373, 55055), (385, 53339), (455, 45133), (605, 33943), (715, 28721), (847, 24245), (1001, 20515), (1573, 13055), (1865, 11011), (2611, 7865), (4103, 5005), (4235, 4849)]