261472510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:757

約数の個数: 64

約数和(自身を含む): 533215872

約数和(自身を除く): 271743362

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 157, 230, 299, 314, 557, 598, 785, 1114, 1495, 1570, 2041, 2785, 2990, 3611, 4082, 5570, 7222, 7241, 10205, 12811, 14482, 18055, 20410, 25622, 36110, 36205, 46943, 64055, 72410, 87449, 93886, 128110, 166543, 174898, 234715, 333086, 437245, 469430, 832715, 874490, 1136837, 1665430, 2011327, 2273674, 4022654, 5684185, 10056635, 11368370, 20113270, 26147251, 52294502, 130736255, 261472510]

約数ペア:

[(1, 261472510), (2, 130736255), (5, 52294502), (10, 26147251), (13, 20113270), (23, 11368370), (26, 10056635), (46, 5684185), (65, 4022654), (115, 2273674), (130, 2011327), (157, 1665430), (230, 1136837), (299, 874490), (314, 832715), (557, 469430), (598, 437245), (785, 333086), (1114, 234715), (1495, 174898), (1570, 166543), (2041, 128110), (2785, 93886), (2990, 87449), (3611, 72410), (4082, 64055), (5570, 46943), (7222, 36205), (7241, 36110), (10205, 25622), (12811, 20410), (14482, 18055)]