20702704

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 80

約数和(自身を含む): 47496960

約数和(自身を除く): 26794256

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 41, 44, 76, 82, 88, 151, 152, 164, 176, 209, 302, 304, 328, 418, 451, 604, 656, 779, 836, 902, 1208, 1558, 1661, 1672, 1804, 2416, 2869, 3116, 3322, 3344, 3608, 5738, 6191, 6232, 6644, 7216, 8569, 11476, 12382, 12464, 13288, 17138, 22952, 24764, 26576, 31559, 34276, 45904, 49528, 63118, 68101, 68552, 99056, 117629, 126236, 136202, 137104, 235258, 252472, 272404, 470516, 504944, 544808, 941032, 1089616, 1293919, 1882064, 2587838, 5175676, 10351352, 20702704]

約数ペア:

[(1, 20702704), (2, 10351352), (4, 5175676), (8, 2587838), (11, 1882064), (16, 1293919), (19, 1089616), (22, 941032), (38, 544808), (41, 504944), (44, 470516), (76, 272404), (82, 252472), (88, 235258), (151, 137104), (152, 136202), (164, 126236), (176, 117629), (209, 99056), (302, 68552), (304, 68101), (328, 63118), (418, 49528), (451, 45904), (604, 34276), (656, 31559), (779, 26576), (836, 24764), (902, 22952), (1208, 17138), (1558, 13288), (1661, 12464), (1672, 12382), (1804, 11476), (2416, 8569), (2869, 7216), (3116, 6644), (3322, 6232), (3344, 6191), (3608, 5738)]