90781168

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{509}}^1$

素因数の和:745

約数の個数: 40

約数和(自身を含む): 179854560

約数和(自身を除く): 89073392

約数列:

[1, 2, 4, 8, 16, 71, 142, 157, 284, 314, 509, 568, 628, 1018, 1136, 1256, 2036, 2512, 4072, 8144, 11147, 22294, 36139, 44588, 72278, 79913, 89176, 144556, 159826, 178352, 289112, 319652, 578224, 639304, 1278608, 5673823, 11347646, 22695292, 45390584, 90781168]

約数ペア:

[(1, 90781168), (2, 45390584), (4, 22695292), (8, 11347646), (16, 5673823), (71, 1278608), (142, 639304), (157, 578224), (284, 319652), (314, 289112), (509, 178352), (568, 159826), (628, 144556), (1018, 89176), (1136, 79913), (1256, 72278), (2036, 44588), (2512, 36139), (4072, 22294), (8144, 11147)]