21527454

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:385

約数の個数: 64

約数和(自身を含む): 49674240

約数和(自身を除く): 28146786

約数列:

[1, 2, 3, 6, 13, 26, 29, 31, 39, 58, 62, 78, 87, 93, 174, 186, 307, 377, 403, 614, 754, 806, 899, 921, 1131, 1209, 1798, 1842, 2262, 2418, 2697, 3991, 5394, 7982, 8903, 9517, 11687, 11973, 17806, 19034, 23374, 23946, 26709, 28551, 35061, 53418, 57102, 70122, 115739, 123721, 231478, 247442, 275993, 347217, 371163, 551986, 694434, 742326, 827979, 1655958, 3587909, 7175818, 10763727, 21527454]

約数ペア:

[(1, 21527454), (2, 10763727), (3, 7175818), (6, 3587909), (13, 1655958), (26, 827979), (29, 742326), (31, 694434), (39, 551986), (58, 371163), (62, 347217), (78, 275993), (87, 247442), (93, 231478), (174, 123721), (186, 115739), (307, 70122), (377, 57102), (403, 53418), (614, 35061), (754, 28551), (806, 26709), (899, 23946), (921, 23374), (1131, 19034), (1209, 17806), (1798, 11973), (1842, 11687), (2262, 9517), (2418, 8903), (2697, 7982), (3991, 5394)]