19983720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{241}}^1\times {\mathrm{691}}^1$

素因数の和:946

約数の個数: 64

約数和(自身を含む): 60287040

約数和(自身を除く): 40303320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 241, 482, 691, 723, 964, 1205, 1382, 1446, 1928, 2073, 2410, 2764, 2892, 3455, 3615, 4146, 4820, 5528, 5784, 6910, 7230, 8292, 9640, 10365, 13820, 14460, 16584, 20730, 27640, 28920, 41460, 82920, 166531, 333062, 499593, 666124, 832655, 999186, 1332248, 1665310, 1998372, 2497965, 3330620, 3996744, 4995930, 6661240, 9991860, 19983720]

約数ペア:

[(1, 19983720), (2, 9991860), (3, 6661240), (4, 4995930), (5, 3996744), (6, 3330620), (8, 2497965), (10, 1998372), (12, 1665310), (15, 1332248), (20, 999186), (24, 832655), (30, 666124), (40, 499593), (60, 333062), (120, 166531), (241, 82920), (482, 41460), (691, 28920), (723, 27640), (964, 20730), (1205, 16584), (1382, 14460), (1446, 13820), (1928, 10365), (2073, 9640), (2410, 8292), (2764, 7230), (2892, 6910), (3455, 5784), (3615, 5528), (4146, 4820)]