21707826

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 52020480

約数和(自身を除く): 30312654

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 61, 74, 111, 122, 183, 222, 229, 259, 366, 427, 458, 518, 687, 777, 854, 1281, 1374, 1554, 1603, 2257, 2562, 3206, 4514, 4809, 6771, 8473, 9618, 13542, 13969, 15799, 16946, 25419, 27938, 31598, 41907, 47397, 50838, 59311, 83814, 94794, 97783, 118622, 177933, 195566, 293349, 355866, 516853, 586698, 1033706, 1550559, 3101118, 3617971, 7235942, 10853913, 21707826]

約数ペア:

[(1, 21707826), (2, 10853913), (3, 7235942), (6, 3617971), (7, 3101118), (14, 1550559), (21, 1033706), (37, 586698), (42, 516853), (61, 355866), (74, 293349), (111, 195566), (122, 177933), (183, 118622), (222, 97783), (229, 94794), (259, 83814), (366, 59311), (427, 50838), (458, 47397), (518, 41907), (687, 31598), (777, 27938), (854, 25419), (1281, 16946), (1374, 15799), (1554, 13969), (1603, 13542), (2257, 9618), (2562, 8473), (3206, 6771), (4514, 4809)]