488790640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{15161}}^1$

素因数の和:15218

約数の個数: 80

約数和(自身を含む): 1263419136

約数和(自身を除く): 774628496

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, 2015, 2480, 3224, 4030, 6448, 8060, 15161, 16120, 30322, 32240, 60644, 75805, 121288, 151610, 197093, 242576, 303220, 394186, 469991, 606440, 788372, 939982, 985465, 1212880, 1576744, 1879964, 1970930, 2349955, 3153488, 3759928, 3941860, 4699910, 6109883, 7519856, 7883720, 9399820, 12219766, 15767440, 18799640, 24439532, 30549415, 37599280, 48879064, 61098830, 97758128, 122197660, 244395320, 488790640]

約数ペア:

[(1, 488790640), (2, 244395320), (4, 122197660), (5, 97758128), (8, 61098830), (10, 48879064), (13, 37599280), (16, 30549415), (20, 24439532), (26, 18799640), (31, 15767440), (40, 12219766), (52, 9399820), (62, 7883720), (65, 7519856), (80, 6109883), (104, 4699910), (124, 3941860), (130, 3759928), (155, 3153488), (208, 2349955), (248, 1970930), (260, 1879964), (310, 1576744), (403, 1212880), (496, 985465), (520, 939982), (620, 788372), (806, 606440), (1040, 469991), (1240, 394186), (1612, 303220), (2015, 242576), (2480, 197093), (3224, 151610), (4030, 121288), (6448, 75805), (8060, 60644), (15161, 32240), (16120, 30322)]