210005005

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:290

約数の個数: 64

約数和(自身を含む): 319979520

約数和(自身を除く): 109974515

約数列:

[1, 5, 7, 19, 31, 35, 61, 95, 133, 155, 167, 217, 305, 427, 589, 665, 835, 1085, 1159, 1169, 1891, 2135, 2945, 3173, 4123, 5177, 5795, 5845, 8113, 9455, 10187, 13237, 15865, 20615, 22211, 25885, 35929, 36239, 40565, 50935, 66185, 71309, 98363, 111055, 179645, 181195, 193553, 251503, 315797, 356545, 491815, 688541, 967765, 1257515, 1354871, 1578985, 2210579, 3442705, 6000143, 6774355, 11052895, 30000715, 42001001, 210005005]

約数ペア:

[(1, 210005005), (5, 42001001), (7, 30000715), (19, 11052895), (31, 6774355), (35, 6000143), (61, 3442705), (95, 2210579), (133, 1578985), (155, 1354871), (167, 1257515), (217, 967765), (305, 688541), (427, 491815), (589, 356545), (665, 315797), (835, 251503), (1085, 193553), (1159, 181195), (1169, 179645), (1891, 111055), (2135, 98363), (2945, 71309), (3173, 66185), (4123, 50935), (5177, 40565), (5795, 36239), (5845, 35929), (8113, 25885), (9455, 22211), (10187, 20615), (13237, 15865)]