21977488

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{673}}^1$

素因数の和:851

約数の個数: 40

約数和(自身を含む): 46217528

約数和(自身を除く): 24240040

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 157, 208, 314, 628, 673, 1256, 1346, 2041, 2512, 2692, 4082, 5384, 8164, 8749, 10768, 16328, 17498, 32656, 34996, 69992, 105661, 139984, 211322, 422644, 845288, 1373593, 1690576, 2747186, 5494372, 10988744, 21977488]

約数ペア:

[(1, 21977488), (2, 10988744), (4, 5494372), (8, 2747186), (13, 1690576), (16, 1373593), (26, 845288), (52, 422644), (104, 211322), (157, 139984), (208, 105661), (314, 69992), (628, 34996), (673, 32656), (1256, 17498), (1346, 16328), (2041, 10768), (2512, 8749), (2692, 8164), (4082, 5384)]