21537712

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1867}}^1$

素因数の和:1985

約数の個数: 40

約数和(自身を含む): 48179456

約数和(自身を除く): 26641744

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1867, 2884, 3734, 5768, 7468, 11536, 13069, 14936, 26138, 29872, 52276, 104552, 192301, 209104, 384602, 769204, 1346107, 1538408, 2692214, 3076816, 5384428, 10768856, 21537712]

約数ペア:

[(1, 21537712), (2, 10768856), (4, 5384428), (7, 3076816), (8, 2692214), (14, 1538408), (16, 1346107), (28, 769204), (56, 384602), (103, 209104), (112, 192301), (206, 104552), (412, 52276), (721, 29872), (824, 26138), (1442, 14936), (1648, 13069), (1867, 11536), (2884, 7468), (3734, 5768)]