997220840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{1627}}^1$

素因数の和:1855

約数の個数: 128

約数和(自身を含む): 2813184000

約数和(自身を除く): 1815963160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 199, 220, 280, 308, 385, 398, 440, 616, 770, 796, 995, 1393, 1540, 1592, 1627, 1990, 2189, 2786, 3080, 3254, 3980, 4378, 5572, 6508, 6965, 7960, 8135, 8756, 10945, 11144, 11389, 13016, 13930, 15323, 16270, 17512, 17897, 21890, 22778, 27860, 30646, 32540, 35794, 43780, 45556, 55720, 56945, 61292, 65080, 71588, 76615, 87560, 89485, 91112, 113890, 122584, 125279, 143176, 153230, 178970, 227780, 250558, 306460, 323773, 357940, 455560, 501116, 612920, 626395, 647546, 715880, 1002232, 1252790, 1295092, 1618865, 2266411, 2505580, 2590184, 3237730, 3561503, 4532822, 5011160, 6475460, 7123006, 9065644, 11332055, 12950920, 14246012, 17807515, 18131288, 22664110, 24930521, 28492024, 35615030, 45328220, 49861042, 71230060, 90656440, 99722084, 124652605, 142460120, 199444168, 249305210, 498610420, 997220840]

約数ペア:

[(1, 997220840), (2, 498610420), (4, 249305210), (5, 199444168), (7, 142460120), (8, 124652605), (10, 99722084), (11, 90656440), (14, 71230060), (20, 49861042), (22, 45328220), (28, 35615030), (35, 28492024), (40, 24930521), (44, 22664110), (55, 18131288), (56, 17807515), (70, 14246012), (77, 12950920), (88, 11332055), (110, 9065644), (140, 7123006), (154, 6475460), (199, 5011160), (220, 4532822), (280, 3561503), (308, 3237730), (385, 2590184), (398, 2505580), (440, 2266411), (616, 1618865), (770, 1295092), (796, 1252790), (995, 1002232), (1393, 715880), (1540, 647546), (1592, 626395), (1627, 612920), (1990, 501116), (2189, 455560), (2786, 357940), (3080, 323773), (3254, 306460), (3980, 250558), (4378, 227780), (5572, 178970), (6508, 153230), (6965, 143176), (7960, 125279), (8135, 122584), (8756, 113890), (10945, 91112), (11144, 89485), (11389, 87560), (13016, 76615), (13930, 71588), (15323, 65080), (16270, 61292), (17512, 56945), (17897, 55720), (21890, 45556), (22778, 43780), (27860, 35794), (30646, 32540)]