21328216

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29297}}^1$

素因数の和:29323

約数の個数: 32

約数和(自身を含む): 49220640

約数和(自身を除く): 27892424

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728, 29297, 58594, 117188, 205079, 234376, 380861, 410158, 761722, 820316, 1523444, 1640632, 2666027, 3046888, 5332054, 10664108, 21328216]

約数ペア:

[(1, 21328216), (2, 10664108), (4, 5332054), (7, 3046888), (8, 2666027), (13, 1640632), (14, 1523444), (26, 820316), (28, 761722), (52, 410158), (56, 380861), (91, 234376), (104, 205079), (182, 117188), (364, 58594), (728, 29297)]