21694540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1867}}^1$

素因数の和:1966

約数の個数: 48

約数和(自身を含む): 52722432

約数和(自身を除く): 31027892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1867, 2324, 2905, 3734, 5810, 7468, 9335, 11620, 13069, 18670, 26138, 37340, 52276, 65345, 130690, 154961, 261380, 309922, 619844, 774805, 1084727, 1549610, 2169454, 3099220, 4338908, 5423635, 10847270, 21694540]

約数ペア:

[(1, 21694540), (2, 10847270), (4, 5423635), (5, 4338908), (7, 3099220), (10, 2169454), (14, 1549610), (20, 1084727), (28, 774805), (35, 619844), (70, 309922), (83, 261380), (140, 154961), (166, 130690), (332, 65345), (415, 52276), (581, 37340), (830, 26138), (1162, 18670), (1660, 13069), (1867, 11620), (2324, 9335), (2905, 7468), (3734, 5810)]