64383280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2054

約数の個数: 80

約数和(自身を含む): 166489344

約数和(自身を除く): 102106064

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 1997, 2015, 2480, 3224, 3994, 4030, 6448, 7988, 8060, 9985, 15976, 16120, 19970, 25961, 31952, 32240, 39940, 51922, 61907, 79880, 103844, 123814, 129805, 159760, 207688, 247628, 259610, 309535, 415376, 495256, 519220, 619070, 804791, 990512, 1038440, 1238140, 1609582, 2076880, 2476280, 3219164, 4023955, 4952560, 6438328, 8047910, 12876656, 16095820, 32191640, 64383280]

約数ペア:

[(1, 64383280), (2, 32191640), (4, 16095820), (5, 12876656), (8, 8047910), (10, 6438328), (13, 4952560), (16, 4023955), (20, 3219164), (26, 2476280), (31, 2076880), (40, 1609582), (52, 1238140), (62, 1038440), (65, 990512), (80, 804791), (104, 619070), (124, 519220), (130, 495256), (155, 415376), (208, 309535), (248, 259610), (260, 247628), (310, 207688), (403, 159760), (496, 129805), (520, 123814), (620, 103844), (806, 79880), (1040, 61907), (1240, 51922), (1612, 39940), (1997, 32240), (2015, 31952), (2480, 25961), (3224, 19970), (3994, 16120), (4030, 15976), (6448, 9985), (7988, 8060)]