21741020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1871}}^1$

素因数の和:1970

約数の個数: 48

約数和(自身を含む): 52835328

約数和(自身を除く): 31094308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 83, 140, 166, 332, 415, 581, 830, 1162, 1660, 1871, 2324, 2905, 3742, 5810, 7484, 9355, 11620, 13097, 18710, 26194, 37420, 52388, 65485, 130970, 155293, 261940, 310586, 621172, 776465, 1087051, 1552930, 2174102, 3105860, 4348204, 5435255, 10870510, 21741020]

約数ペア:

[(1, 21741020), (2, 10870510), (4, 5435255), (5, 4348204), (7, 3105860), (10, 2174102), (14, 1552930), (20, 1087051), (28, 776465), (35, 621172), (70, 310586), (83, 261940), (140, 155293), (166, 130970), (332, 65485), (415, 52388), (581, 37420), (830, 26194), (1162, 18710), (1660, 13097), (1871, 11620), (2324, 9355), (2905, 7484), (3742, 5810)]