21667040

素因数分解:

$2^5\times 5^1\times {\mathrm{191}}^1\times {\mathrm{709}}^1$

素因数の和:915

約数の個数: 48

約数和(自身を含む): 51528960

約数和(自身を除く): 29861920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 191, 382, 709, 764, 955, 1418, 1528, 1910, 2836, 3056, 3545, 3820, 5672, 6112, 7090, 7640, 11344, 14180, 15280, 22688, 28360, 30560, 56720, 113440, 135419, 270838, 541676, 677095, 1083352, 1354190, 2166704, 2708380, 4333408, 5416760, 10833520, 21667040]

約数ペア:

[(1, 21667040), (2, 10833520), (4, 5416760), (5, 4333408), (8, 2708380), (10, 2166704), (16, 1354190), (20, 1083352), (32, 677095), (40, 541676), (80, 270838), (160, 135419), (191, 113440), (382, 56720), (709, 30560), (764, 28360), (955, 22688), (1418, 15280), (1528, 14180), (1910, 11344), (2836, 7640), (3056, 7090), (3545, 6112), (3820, 5672)]