20171480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1181}}^1$

素因数の和:1260

約数の個数: 64

約数和(自身を含む): 52764480

約数和(自身を除く): 32593000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 61, 70, 122, 140, 244, 280, 305, 427, 488, 610, 854, 1181, 1220, 1708, 2135, 2362, 2440, 3416, 4270, 4724, 5905, 8267, 8540, 9448, 11810, 16534, 17080, 23620, 33068, 41335, 47240, 66136, 72041, 82670, 144082, 165340, 288164, 330680, 360205, 504287, 576328, 720410, 1008574, 1440820, 2017148, 2521435, 2881640, 4034296, 5042870, 10085740, 20171480]

約数ペア:

[(1, 20171480), (2, 10085740), (4, 5042870), (5, 4034296), (7, 2881640), (8, 2521435), (10, 2017148), (14, 1440820), (20, 1008574), (28, 720410), (35, 576328), (40, 504287), (56, 360205), (61, 330680), (70, 288164), (122, 165340), (140, 144082), (244, 82670), (280, 72041), (305, 66136), (427, 47240), (488, 41335), (610, 33068), (854, 23620), (1181, 17080), (1220, 16534), (1708, 11810), (2135, 9448), (2362, 8540), (2440, 8267), (3416, 5905), (4270, 4724)]