18839240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1103}}^1$

素因数の和:1182

約数の個数: 64

約数和(自身を含む): 49282560

約数和(自身を除く): 30443320

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, 1103, 1220, 1708, 2135, 2206, 2440, 3416, 4270, 4412, 5515, 7721, 8540, 8824, 11030, 15442, 17080, 22060, 30884, 38605, 44120, 61768, 67283, 77210, 134566, 154420, 269132, 308840, 336415, 470981, 538264, 672830, 941962, 1345660, 1883924, 2354905, 2691320, 3767848, 4709810, 9419620, 18839240]

約数ペア:

[(1, 18839240), (2, 9419620), (4, 4709810), (5, 3767848), (7, 2691320), (8, 2354905), (10, 1883924), (14, 1345660), (20, 941962), (28, 672830), (35, 538264), (40, 470981), (56, 336415), (61, 308840), (70, 269132), (122, 154420), (140, 134566), (244, 77210), (280, 67283), (305, 61768), (427, 44120), (488, 38605), (610, 30884), (854, 22060), (1103, 17080), (1220, 15442), (1708, 11030), (2135, 8824), (2206, 8540), (2440, 7721), (3416, 5515), (4270, 4412)]