21530912

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{709}}^1$

素因数の和:805

約数の個数: 48

約数和(自身を含む): 46340280

約数和(自身を除く): 24809368

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 73, 104, 146, 208, 292, 416, 584, 709, 949, 1168, 1418, 1898, 2336, 2836, 3796, 5672, 7592, 9217, 11344, 15184, 18434, 22688, 30368, 36868, 51757, 73736, 103514, 147472, 207028, 294944, 414056, 672841, 828112, 1345682, 1656224, 2691364, 5382728, 10765456, 21530912]

約数ペア:

[(1, 21530912), (2, 10765456), (4, 5382728), (8, 2691364), (13, 1656224), (16, 1345682), (26, 828112), (32, 672841), (52, 414056), (73, 294944), (104, 207028), (146, 147472), (208, 103514), (292, 73736), (416, 51757), (584, 36868), (709, 30368), (949, 22688), (1168, 18434), (1418, 15184), (1898, 11344), (2336, 9217), (2836, 7592), (3796, 5672)]