291180520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{127}}^1$

素因数の和:255

約数の個数: 96

約数和(自身を含む): 697835520

約数和(自身を除く): 406655000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 127, 155, 172, 215, 248, 254, 310, 344, 430, 508, 620, 635, 860, 1016, 1240, 1270, 1333, 1720, 1849, 2540, 2666, 3698, 3937, 5080, 5332, 5461, 6665, 7396, 7874, 9245, 10664, 10922, 13330, 14792, 15748, 18490, 19685, 21844, 26660, 27305, 31496, 36980, 39370, 43688, 53320, 54610, 57319, 73960, 78740, 109220, 114638, 157480, 169291, 218440, 229276, 234823, 286595, 338582, 458552, 469646, 573190, 677164, 846455, 939292, 1146380, 1174115, 1354328, 1692910, 1878584, 2292760, 2348230, 3385820, 4696460, 6771640, 7279513, 9392920, 14559026, 29118052, 36397565, 58236104, 72795130, 145590260, 291180520]

約数ペア:

[(1, 291180520), (2, 145590260), (4, 72795130), (5, 58236104), (8, 36397565), (10, 29118052), (20, 14559026), (31, 9392920), (40, 7279513), (43, 6771640), (62, 4696460), (86, 3385820), (124, 2348230), (127, 2292760), (155, 1878584), (172, 1692910), (215, 1354328), (248, 1174115), (254, 1146380), (310, 939292), (344, 846455), (430, 677164), (508, 573190), (620, 469646), (635, 458552), (860, 338582), (1016, 286595), (1240, 234823), (1270, 229276), (1333, 218440), (1720, 169291), (1849, 157480), (2540, 114638), (2666, 109220), (3698, 78740), (3937, 73960), (5080, 57319), (5332, 54610), (5461, 53320), (6665, 43688), (7396, 39370), (7874, 36980), (9245, 31496), (10664, 27305), (10922, 26660), (13330, 21844), (14792, 19685), (15748, 18490)]