21086538

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{479}}^1$

素因数の和:547

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28679862

約数列:

[1, 2, 3, 6, 11, 22, 23, 29, 33, 46, 58, 66, 69, 87, 138, 174, 253, 319, 479, 506, 638, 667, 759, 957, 958, 1334, 1437, 1518, 1914, 2001, 2874, 4002, 5269, 7337, 10538, 11017, 13891, 14674, 15807, 22011, 22034, 27782, 31614, 33051, 41673, 44022, 66102, 83346, 121187, 152801, 242374, 305602, 319493, 363561, 458403, 638986, 727122, 916806, 958479, 1916958, 3514423, 7028846, 10543269, 21086538]

約数ペア:

[(1, 21086538), (2, 10543269), (3, 7028846), (6, 3514423), (11, 1916958), (22, 958479), (23, 916806), (29, 727122), (33, 638986), (46, 458403), (58, 363561), (66, 319493), (69, 305602), (87, 242374), (138, 152801), (174, 121187), (253, 83346), (319, 66102), (479, 44022), (506, 41673), (638, 33051), (667, 31614), (759, 27782), (957, 22034), (958, 22011), (1334, 15807), (1437, 14674), (1518, 13891), (1914, 11017), (2001, 10538), (2874, 7337), (4002, 5269)]