638577992

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{24859}}^1$

素因数の和:24910

約数の個数: 48

約数和(自身を含む): 1364814000

約数和(自身を除く): 726236008

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 152, 169, 247, 338, 494, 676, 988, 1352, 1976, 3211, 6422, 12844, 24859, 25688, 49718, 99436, 198872, 323167, 472321, 646334, 944642, 1292668, 1889284, 2585336, 3778568, 4201171, 6140173, 8402342, 12280346, 16804684, 24560692, 33609368, 49121384, 79822249, 159644498, 319288996, 638577992]

約数ペア:

[(1, 638577992), (2, 319288996), (4, 159644498), (8, 79822249), (13, 49121384), (19, 33609368), (26, 24560692), (38, 16804684), (52, 12280346), (76, 8402342), (104, 6140173), (152, 4201171), (169, 3778568), (247, 2585336), (338, 1889284), (494, 1292668), (676, 944642), (988, 646334), (1352, 472321), (1976, 323167), (3211, 198872), (6422, 99436), (12844, 49718), (24859, 25688)]