20797680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{449}}^1$

素因数の和:658

約数の個数: 80

約数和(自身を含む): 64951200

約数和(自身を除く): 44153520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 193, 240, 386, 449, 579, 772, 898, 965, 1158, 1347, 1544, 1796, 1930, 2245, 2316, 2694, 2895, 3088, 3592, 3860, 4490, 4632, 5388, 5790, 6735, 7184, 7720, 8980, 9264, 10776, 11580, 13470, 15440, 17960, 21552, 23160, 26940, 35920, 46320, 53880, 86657, 107760, 173314, 259971, 346628, 433285, 519942, 693256, 866570, 1039884, 1299855, 1386512, 1733140, 2079768, 2599710, 3466280, 4159536, 5199420, 6932560, 10398840, 20797680]

約数ペア:

[(1, 20797680), (2, 10398840), (3, 6932560), (4, 5199420), (5, 4159536), (6, 3466280), (8, 2599710), (10, 2079768), (12, 1733140), (15, 1386512), (16, 1299855), (20, 1039884), (24, 866570), (30, 693256), (40, 519942), (48, 433285), (60, 346628), (80, 259971), (120, 173314), (193, 107760), (240, 86657), (386, 53880), (449, 46320), (579, 35920), (772, 26940), (898, 23160), (965, 21552), (1158, 17960), (1347, 15440), (1544, 13470), (1796, 11580), (1930, 10776), (2245, 9264), (2316, 8980), (2694, 7720), (2895, 7184), (3088, 6735), (3592, 5790), (3860, 5388), (4490, 4632)]