20704280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{283}}^1$

素因数の和:384

約数の個数: 64

約数和(自身を含む): 49075200

約数和(自身を除く): 28370920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 59, 62, 118, 124, 155, 236, 248, 283, 295, 310, 472, 566, 590, 620, 1132, 1180, 1240, 1415, 1829, 2264, 2360, 2830, 3658, 5660, 7316, 8773, 9145, 11320, 14632, 16697, 17546, 18290, 33394, 35092, 36580, 43865, 66788, 70184, 73160, 83485, 87730, 133576, 166970, 175460, 333940, 350920, 517607, 667880, 1035214, 2070428, 2588035, 4140856, 5176070, 10352140, 20704280]

約数ペア:

[(1, 20704280), (2, 10352140), (4, 5176070), (5, 4140856), (8, 2588035), (10, 2070428), (20, 1035214), (31, 667880), (40, 517607), (59, 350920), (62, 333940), (118, 175460), (124, 166970), (155, 133576), (236, 87730), (248, 83485), (283, 73160), (295, 70184), (310, 66788), (472, 43865), (566, 36580), (590, 35092), (620, 33394), (1132, 18290), (1180, 17546), (1240, 16697), (1415, 14632), (1829, 11320), (2264, 9145), (2360, 8773), (2830, 7316), (3658, 5660)]