99990920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{883}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 238680000

約数和(自身を除く): 138689080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 149, 152, 190, 298, 380, 596, 745, 760, 883, 1192, 1490, 1766, 2831, 2980, 3532, 4415, 5662, 5960, 7064, 8830, 11324, 14155, 16777, 17660, 22648, 28310, 33554, 35320, 56620, 67108, 83885, 113240, 131567, 134216, 167770, 263134, 335540, 526268, 657835, 671080, 1052536, 1315670, 2499773, 2631340, 4999546, 5262680, 9999092, 12498865, 19998184, 24997730, 49995460, 99990920]

約数ペア:

[(1, 99990920), (2, 49995460), (4, 24997730), (5, 19998184), (8, 12498865), (10, 9999092), (19, 5262680), (20, 4999546), (38, 2631340), (40, 2499773), (76, 1315670), (95, 1052536), (149, 671080), (152, 657835), (190, 526268), (298, 335540), (380, 263134), (596, 167770), (745, 134216), (760, 131567), (883, 113240), (1192, 83885), (1490, 67108), (1766, 56620), (2831, 35320), (2980, 33554), (3532, 28310), (4415, 22648), (5662, 17660), (5960, 16777), (7064, 14155), (8830, 11324)]