28064920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1741}}^1$

素因数の和:1796

約数の個数: 64

約数和(自身を含む): 70237440

約数和(自身を除く): 42172520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1741, 2015, 3224, 3482, 4030, 6964, 8060, 8705, 13928, 16120, 17410, 22633, 34820, 45266, 53971, 69640, 90532, 107942, 113165, 181064, 215884, 226330, 269855, 431768, 452660, 539710, 701623, 905320, 1079420, 1403246, 2158840, 2806492, 3508115, 5612984, 7016230, 14032460, 28064920]

約数ペア:

[(1, 28064920), (2, 14032460), (4, 7016230), (5, 5612984), (8, 3508115), (10, 2806492), (13, 2158840), (20, 1403246), (26, 1079420), (31, 905320), (40, 701623), (52, 539710), (62, 452660), (65, 431768), (104, 269855), (124, 226330), (130, 215884), (155, 181064), (248, 113165), (260, 107942), (310, 90532), (403, 69640), (520, 53971), (620, 45266), (806, 34820), (1240, 22633), (1612, 17410), (1741, 16120), (2015, 13928), (3224, 8705), (3482, 8060), (4030, 6964)]