20556195

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 38707200

約数和(自身を除く): 18151005

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 79, 83, 95, 165, 209, 237, 249, 285, 395, 415, 627, 869, 913, 1045, 1185, 1245, 1501, 1577, 2607, 2739, 3135, 4345, 4503, 4565, 4731, 6557, 7505, 7885, 13035, 13695, 16511, 17347, 19671, 22515, 23655, 32785, 49533, 52041, 72127, 82555, 86735, 98355, 124583, 216381, 247665, 260205, 360635, 373749, 622915, 1081905, 1370413, 1868745, 4111239, 6852065, 20556195]

約数ペア:

[(1, 20556195), (3, 6852065), (5, 4111239), (11, 1868745), (15, 1370413), (19, 1081905), (33, 622915), (55, 373749), (57, 360635), (79, 260205), (83, 247665), (95, 216381), (165, 124583), (209, 98355), (237, 86735), (249, 82555), (285, 72127), (395, 52041), (415, 49533), (627, 32785), (869, 23655), (913, 22515), (1045, 19671), (1185, 17347), (1245, 16511), (1501, 13695), (1577, 13035), (2607, 7885), (2739, 7505), (3135, 6557), (4345, 4731), (4503, 4565)]