20349920

素因数分解:

$2^5\times 5^1\times {\mathrm{193}}^1\times {\mathrm{659}}^1$

素因数の和:867

約数の個数: 48

約数和(自身を含む): 48399120

約数和(自身を除く): 28049200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 193, 386, 659, 772, 965, 1318, 1544, 1930, 2636, 3088, 3295, 3860, 5272, 6176, 6590, 7720, 10544, 13180, 15440, 21088, 26360, 30880, 52720, 105440, 127187, 254374, 508748, 635935, 1017496, 1271870, 2034992, 2543740, 4069984, 5087480, 10174960, 20349920]

約数ペア:

[(1, 20349920), (2, 10174960), (4, 5087480), (5, 4069984), (8, 2543740), (10, 2034992), (16, 1271870), (20, 1017496), (32, 635935), (40, 508748), (80, 254374), (160, 127187), (193, 105440), (386, 52720), (659, 30880), (772, 26360), (965, 21088), (1318, 15440), (1544, 13180), (1930, 10544), (2636, 7720), (3088, 6590), (3295, 6176), (3860, 5272)]