388973907

素因数分解:

$3^4\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4261}}^1$

素因数の和:4310

約数の個数: 60

約数和(自身を含む): 705480336

約数和(自身を除く): 316506429

約数列:

[1, 3, 7, 9, 21, 23, 27, 49, 63, 69, 81, 147, 161, 189, 207, 441, 483, 567, 621, 1127, 1323, 1449, 1863, 3381, 3969, 4261, 4347, 10143, 12783, 13041, 29827, 30429, 38349, 89481, 91287, 98003, 115047, 208789, 268443, 294009, 345141, 626367, 686021, 805329, 882027, 1879101, 2058063, 2415987, 2646081, 4802147, 5637303, 6174189, 7938243, 14406441, 16911909, 18522567, 43219323, 55567701, 129657969, 388973907]

約数ペア:

[(1, 388973907), (3, 129657969), (7, 55567701), (9, 43219323), (21, 18522567), (23, 16911909), (27, 14406441), (49, 7938243), (63, 6174189), (69, 5637303), (81, 4802147), (147, 2646081), (161, 2415987), (189, 2058063), (207, 1879101), (441, 882027), (483, 805329), (567, 686021), (621, 626367), (1127, 345141), (1323, 294009), (1449, 268443), (1863, 208789), (3381, 115047), (3969, 98003), (4261, 91287), (4347, 89481), (10143, 38349), (12783, 30429), (13041, 29827)]