21349185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 20019135

約数列:

[1, 3, 5, 11, 13, 15, 33, 37, 39, 55, 65, 111, 143, 165, 185, 195, 269, 407, 429, 481, 555, 715, 807, 1221, 1345, 1443, 2035, 2145, 2405, 2959, 3497, 4035, 5291, 6105, 7215, 8877, 9953, 10491, 14795, 15873, 17485, 26455, 29859, 38467, 44385, 49765, 52455, 79365, 109483, 115401, 129389, 149295, 192335, 328449, 388167, 547415, 577005, 646945, 1423279, 1642245, 1940835, 4269837, 7116395, 21349185]

約数ペア:

[(1, 21349185), (3, 7116395), (5, 4269837), (11, 1940835), (13, 1642245), (15, 1423279), (33, 646945), (37, 577005), (39, 547415), (55, 388167), (65, 328449), (111, 192335), (143, 149295), (165, 129389), (185, 115401), (195, 109483), (269, 79365), (407, 52455), (429, 49765), (481, 44385), (555, 38467), (715, 29859), (807, 26455), (1221, 17485), (1345, 15873), (1443, 14795), (2035, 10491), (2145, 9953), (2405, 8877), (2959, 7215), (3497, 6105), (4035, 5291)]