51269920

素因数分解:

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

素因数の和:342

約数の個数: 72

約数和(自身を含む): 131278644

約数和(自身を除く): 80008724

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 157, 160, 208, 260, 314, 416, 520, 628, 785, 1040, 1256, 1570, 2041, 2080, 2512, 3140, 4082, 5024, 6280, 8164, 10205, 12560, 16328, 20410, 24649, 25120, 32656, 40820, 49298, 65312, 81640, 98596, 123245, 163280, 197192, 246490, 320437, 326560, 394384, 492980, 640874, 788768, 985960, 1281748, 1602185, 1971920, 2563496, 3204370, 3943840, 5126992, 6408740, 10253984, 12817480, 25634960, 51269920]

約数ペア:

[(1, 51269920), (2, 25634960), (4, 12817480), (5, 10253984), (8, 6408740), (10, 5126992), (13, 3943840), (16, 3204370), (20, 2563496), (26, 1971920), (32, 1602185), (40, 1281748), (52, 985960), (65, 788768), (80, 640874), (104, 492980), (130, 394384), (157, 326560), (160, 320437), (208, 246490), (260, 197192), (314, 163280), (416, 123245), (520, 98596), (628, 81640), (785, 65312), (1040, 49298), (1256, 40820), (1570, 32656), (2041, 25120), (2080, 24649), (2512, 20410), (3140, 16328), (4082, 12560), (5024, 10205), (6280, 8164)]