21587202

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 61931520

約数和(自身を除く): 40344318

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 23, 26, 27, 39, 42, 46, 54, 63, 69, 78, 91, 117, 126, 138, 161, 182, 189, 191, 207, 234, 273, 299, 322, 351, 378, 382, 414, 483, 546, 573, 598, 621, 702, 819, 897, 966, 1146, 1242, 1337, 1449, 1638, 1719, 1794, 2093, 2457, 2483, 2674, 2691, 2898, 3438, 4011, 4186, 4347, 4393, 4914, 4966, 5157, 5382, 6279, 7449, 8022, 8073, 8694, 8786, 10314, 12033, 12558, 13179, 14898, 16146, 17381, 18837, 22347, 24066, 26358, 30751, 34762, 36099, 37674, 39537, 44694, 52143, 56511, 57109, 61502, 67041, 72198, 79074, 92253, 104286, 113022, 114218, 118611, 134082, 156429, 171327, 184506, 237222, 276759, 312858, 342654, 399763, 469287, 513981, 553518, 799526, 830277, 938574, 1027962, 1199289, 1541943, 1660554, 2398578, 3083886, 3597867, 7195734, 10793601, 21587202]

約数ペア:

[(1, 21587202), (2, 10793601), (3, 7195734), (6, 3597867), (7, 3083886), (9, 2398578), (13, 1660554), (14, 1541943), (18, 1199289), (21, 1027962), (23, 938574), (26, 830277), (27, 799526), (39, 553518), (42, 513981), (46, 469287), (54, 399763), (63, 342654), (69, 312858), (78, 276759), (91, 237222), (117, 184506), (126, 171327), (138, 156429), (161, 134082), (182, 118611), (189, 114218), (191, 113022), (207, 104286), (234, 92253), (273, 79074), (299, 72198), (322, 67041), (351, 61502), (378, 57109), (382, 56511), (414, 52143), (483, 44694), (546, 39537), (573, 37674), (598, 36099), (621, 34762), (702, 30751), (819, 26358), (897, 24066), (966, 22347), (1146, 18837), (1242, 17381), (1337, 16146), (1449, 14898), (1638, 13179), (1719, 12558), (1794, 12033), (2093, 10314), (2457, 8786), (2483, 8694), (2674, 8073), (2691, 8022), (2898, 7449), (3438, 6279), (4011, 5382), (4186, 5157), (4347, 4966), (4393, 4914)]