21505414

素因数分解:

$2^1\times 7^3\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 19966586

約数列:

[1, 2, 7, 14, 23, 29, 46, 47, 49, 58, 94, 98, 161, 203, 322, 329, 343, 406, 658, 667, 686, 1081, 1127, 1334, 1363, 1421, 2162, 2254, 2303, 2726, 2842, 4606, 4669, 7567, 7889, 9338, 9541, 9947, 15134, 15778, 16121, 19082, 19894, 31349, 32242, 32683, 52969, 62698, 65366, 66787, 105938, 133574, 219443, 228781, 370783, 438886, 457562, 467509, 741566, 935018, 1536101, 3072202, 10752707, 21505414]

約数ペア:

[(1, 21505414), (2, 10752707), (7, 3072202), (14, 1536101), (23, 935018), (29, 741566), (46, 467509), (47, 457562), (49, 438886), (58, 370783), (94, 228781), (98, 219443), (161, 133574), (203, 105938), (322, 66787), (329, 65366), (343, 62698), (406, 52969), (658, 32683), (667, 32242), (686, 31349), (1081, 19894), (1127, 19082), (1334, 16121), (1363, 15778), (1421, 15134), (2162, 9947), (2254, 9541), (2303, 9338), (2726, 7889), (2842, 7567), (4606, 4669)]