21694020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{547}}^1\times {\mathrm{661}}^1$

素因数の和:1220

約数の個数: 48

約数和(自身を含む): 60946368

約数和(自身を除く): 39252348

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 547, 661, 1094, 1322, 1641, 1983, 2188, 2644, 2735, 3282, 3305, 3966, 5470, 6564, 6610, 7932, 8205, 9915, 10940, 13220, 16410, 19830, 32820, 39660, 361567, 723134, 1084701, 1446268, 1807835, 2169402, 3615670, 4338804, 5423505, 7231340, 10847010, 21694020]

約数ペア:

[(1, 21694020), (2, 10847010), (3, 7231340), (4, 5423505), (5, 4338804), (6, 3615670), (10, 2169402), (12, 1807835), (15, 1446268), (20, 1084701), (30, 723134), (60, 361567), (547, 39660), (661, 32820), (1094, 19830), (1322, 16410), (1641, 13220), (1983, 10940), (2188, 9915), (2644, 8205), (2735, 7932), (3282, 6610), (3305, 6564), (3966, 5470)]