281809840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8741}}^1$

素因数の和:8798

約数の個数: 80

約数和(自身を含む): 728453376

約数和(自身を除く): 446643536

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, 8741, 16120, 17482, 32240, 34964, 43705, 69928, 87410, 113633, 139856, 174820, 227266, 270971, 349640, 454532, 541942, 568165, 699280, 909064, 1083884, 1136330, 1354855, 1818128, 2167768, 2272660, 2709710, 3522623, 4335536, 4545320, 5419420, 7045246, 9090640, 10838840, 14090492, 17613115, 21677680, 28180984, 35226230, 56361968, 70452460, 140904920, 281809840]

約数ペア:

[(1, 281809840), (2, 140904920), (4, 70452460), (5, 56361968), (8, 35226230), (10, 28180984), (13, 21677680), (16, 17613115), (20, 14090492), (26, 10838840), (31, 9090640), (40, 7045246), (52, 5419420), (62, 4545320), (65, 4335536), (80, 3522623), (104, 2709710), (124, 2272660), (130, 2167768), (155, 1818128), (208, 1354855), (248, 1136330), (260, 1083884), (310, 909064), (403, 699280), (496, 568165), (520, 541942), (620, 454532), (806, 349640), (1040, 270971), (1240, 227266), (1612, 174820), (2015, 139856), (2480, 113633), (3224, 87410), (4030, 69928), (6448, 43705), (8060, 34964), (8741, 32240), (16120, 17482)]