72710440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{643}}^1$

素因数の和:922

約数の個数: 64

約数和(自身を含む): 179444160

約数和(自身を除く): 106733720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 257, 440, 514, 643, 1028, 1285, 1286, 2056, 2570, 2572, 2827, 3215, 5140, 5144, 5654, 6430, 7073, 10280, 11308, 12860, 14135, 14146, 22616, 25720, 28270, 28292, 35365, 56540, 56584, 70730, 113080, 141460, 165251, 282920, 330502, 661004, 826255, 1322008, 1652510, 1817761, 3305020, 3635522, 6610040, 7271044, 9088805, 14542088, 18177610, 36355220, 72710440]

約数ペア:

[(1, 72710440), (2, 36355220), (4, 18177610), (5, 14542088), (8, 9088805), (10, 7271044), (11, 6610040), (20, 3635522), (22, 3305020), (40, 1817761), (44, 1652510), (55, 1322008), (88, 826255), (110, 661004), (220, 330502), (257, 282920), (440, 165251), (514, 141460), (643, 113080), (1028, 70730), (1285, 56584), (1286, 56540), (2056, 35365), (2570, 28292), (2572, 28270), (2827, 25720), (3215, 22616), (5140, 14146), (5144, 14135), (5654, 12860), (6430, 11308), (7073, 10280)]