21137690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{691}}^1$

素因数の和:747

約数の個数: 64

約数和(自身を含む): 47831040

約数和(自身を除く): 26693350

約数列:

[1, 2, 5, 7, 10, 14, 19, 23, 35, 38, 46, 70, 95, 115, 133, 161, 190, 230, 266, 322, 437, 665, 691, 805, 874, 1330, 1382, 1610, 2185, 3059, 3455, 4370, 4837, 6118, 6910, 9674, 13129, 15295, 15893, 24185, 26258, 30590, 31786, 48370, 65645, 79465, 91903, 111251, 131290, 158930, 183806, 222502, 301967, 459515, 556255, 603934, 919030, 1112510, 1509835, 2113769, 3019670, 4227538, 10568845, 21137690]

約数ペア:

[(1, 21137690), (2, 10568845), (5, 4227538), (7, 3019670), (10, 2113769), (14, 1509835), (19, 1112510), (23, 919030), (35, 603934), (38, 556255), (46, 459515), (70, 301967), (95, 222502), (115, 183806), (133, 158930), (161, 131290), (190, 111251), (230, 91903), (266, 79465), (322, 65645), (437, 48370), (665, 31786), (691, 30590), (805, 26258), (874, 24185), (1330, 15893), (1382, 15295), (1610, 13129), (2185, 9674), (3059, 6910), (3455, 6118), (4370, 4837)]