19757320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{541}}^1$

素因数の和:646

約数の個数: 64

約数和(自身を含む): 49170240

約数和(自身を除く): 29412920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 541, 664, 830, 913, 1082, 1660, 1826, 2164, 2705, 3320, 3652, 4328, 4565, 5410, 5951, 7304, 9130, 10820, 11902, 18260, 21640, 23804, 29755, 36520, 44903, 47608, 59510, 89806, 119020, 179612, 224515, 238040, 359224, 449030, 493933, 898060, 987866, 1796120, 1975732, 2469665, 3951464, 4939330, 9878660, 19757320]

約数ペア:

[(1, 19757320), (2, 9878660), (4, 4939330), (5, 3951464), (8, 2469665), (10, 1975732), (11, 1796120), (20, 987866), (22, 898060), (40, 493933), (44, 449030), (55, 359224), (83, 238040), (88, 224515), (110, 179612), (166, 119020), (220, 89806), (332, 59510), (415, 47608), (440, 44903), (541, 36520), (664, 29755), (830, 23804), (913, 21640), (1082, 18260), (1660, 11902), (1826, 10820), (2164, 9130), (2705, 7304), (3320, 5951), (3652, 5410), (4328, 4565)]