1998371480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{2879}}^1$

素因数の和:3001

約数の個数: 128

約数和(自身を含む): 5358182400

約数和(自身を除く): 3359810920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 67, 70, 74, 134, 140, 148, 185, 259, 268, 280, 296, 335, 370, 469, 518, 536, 670, 740, 938, 1036, 1295, 1340, 1480, 1876, 2072, 2345, 2479, 2590, 2680, 2879, 3752, 4690, 4958, 5180, 5758, 9380, 9916, 10360, 11516, 12395, 14395, 17353, 18760, 19832, 20153, 23032, 24790, 28790, 34706, 40306, 49580, 57580, 69412, 80612, 86765, 99160, 100765, 106523, 115160, 138824, 161224, 173530, 192893, 201530, 213046, 347060, 385786, 403060, 426092, 532615, 694120, 745661, 771572, 806120, 852184, 964465, 1065230, 1350251, 1491322, 1543144, 1928930, 2130460, 2700502, 2982644, 3728305, 3857860, 4260920, 5401004, 5965288, 6751255, 7137041, 7456610, 7715720, 10802008, 13502510, 14274082, 14913220, 27005020, 28548164, 29826440, 35685205, 49959287, 54010040, 57096328, 71370410, 99918574, 142740820, 199837148, 249796435, 285481640, 399674296, 499592870, 999185740, 1998371480]

約数ペア:

[(1, 1998371480), (2, 999185740), (4, 499592870), (5, 399674296), (7, 285481640), (8, 249796435), (10, 199837148), (14, 142740820), (20, 99918574), (28, 71370410), (35, 57096328), (37, 54010040), (40, 49959287), (56, 35685205), (67, 29826440), (70, 28548164), (74, 27005020), (134, 14913220), (140, 14274082), (148, 13502510), (185, 10802008), (259, 7715720), (268, 7456610), (280, 7137041), (296, 6751255), (335, 5965288), (370, 5401004), (469, 4260920), (518, 3857860), (536, 3728305), (670, 2982644), (740, 2700502), (938, 2130460), (1036, 1928930), (1295, 1543144), (1340, 1491322), (1480, 1350251), (1876, 1065230), (2072, 964465), (2345, 852184), (2479, 806120), (2590, 771572), (2680, 745661), (2879, 694120), (3752, 532615), (4690, 426092), (4958, 403060), (5180, 385786), (5758, 347060), (9380, 213046), (9916, 201530), (10360, 192893), (11516, 173530), (12395, 161224), (14395, 138824), (17353, 115160), (18760, 106523), (19832, 100765), (20153, 99160), (23032, 86765), (24790, 80612), (28790, 69412), (34706, 57580), (40306, 49580)]