20890512

素因数分解:

$2^4\times 3^2\times {\mathrm{239}}^1\times {\mathrm{607}}^1$

素因数の和:860

約数の個数: 60

約数和(自身を含む): 58805760

約数和(自身を除く): 37915248

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 239, 478, 607, 717, 956, 1214, 1434, 1821, 1912, 2151, 2428, 2868, 3642, 3824, 4302, 4856, 5463, 5736, 7284, 8604, 9712, 10926, 11472, 14568, 17208, 21852, 29136, 34416, 43704, 87408, 145073, 290146, 435219, 580292, 870438, 1160584, 1305657, 1740876, 2321168, 2611314, 3481752, 5222628, 6963504, 10445256, 20890512]

約数ペア:

[(1, 20890512), (2, 10445256), (3, 6963504), (4, 5222628), (6, 3481752), (8, 2611314), (9, 2321168), (12, 1740876), (16, 1305657), (18, 1160584), (24, 870438), (36, 580292), (48, 435219), (72, 290146), (144, 145073), (239, 87408), (478, 43704), (607, 34416), (717, 29136), (956, 21852), (1214, 17208), (1434, 14568), (1821, 11472), (1912, 10926), (2151, 9712), (2428, 8604), (2868, 7284), (3642, 5736), (3824, 5463), (4302, 4856)]