20689305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{659}}^1$

素因数の和:710

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21888615

約数列:

[1, 3, 5, 7, 13, 15, 21, 23, 35, 39, 65, 69, 91, 105, 115, 161, 195, 273, 299, 345, 455, 483, 659, 805, 897, 1365, 1495, 1977, 2093, 2415, 3295, 4485, 4613, 6279, 8567, 9885, 10465, 13839, 15157, 23065, 25701, 31395, 42835, 45471, 59969, 69195, 75785, 106099, 128505, 179907, 197041, 227355, 299845, 318297, 530495, 591123, 899535, 985205, 1379287, 1591485, 2955615, 4137861, 6896435, 20689305]

約数ペア:

[(1, 20689305), (3, 6896435), (5, 4137861), (7, 2955615), (13, 1591485), (15, 1379287), (21, 985205), (23, 899535), (35, 591123), (39, 530495), (65, 318297), (69, 299845), (91, 227355), (105, 197041), (115, 179907), (161, 128505), (195, 106099), (273, 75785), (299, 69195), (345, 59969), (455, 45471), (483, 42835), (659, 31395), (805, 25701), (897, 23065), (1365, 15157), (1495, 13839), (1977, 10465), (2093, 9885), (2415, 8567), (3295, 6279), (4485, 4613)]