21515984

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{6197}}^1$

素因数の和:6243

約数の個数: 40

約数和(自身を含む): 49187328

約数和(自身を除く): 27671344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 6197, 12394, 24788, 43379, 49576, 86758, 99152, 173516, 192107, 347032, 384214, 694064, 768428, 1344749, 1536856, 2689498, 3073712, 5378996, 10757992, 21515984]

約数ペア:

[(1, 21515984), (2, 10757992), (4, 5378996), (7, 3073712), (8, 2689498), (14, 1536856), (16, 1344749), (28, 768428), (31, 694064), (56, 384214), (62, 347032), (112, 192107), (124, 173516), (217, 99152), (248, 86758), (434, 49576), (496, 43379), (868, 24788), (1736, 12394), (3472, 6197)]