20347920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{479}}^1$

素因数の和:557

約数の個数: 120

約数和(自身を含む): 69638400

約数和(自身を除く): 49290480

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 59, 60, 72, 80, 90, 118, 120, 144, 177, 180, 236, 240, 295, 354, 360, 472, 479, 531, 590, 708, 720, 885, 944, 958, 1062, 1180, 1416, 1437, 1770, 1916, 2124, 2360, 2395, 2655, 2832, 2874, 3540, 3832, 4248, 4311, 4720, 4790, 5310, 5748, 7080, 7185, 7664, 8496, 8622, 9580, 10620, 11496, 14160, 14370, 17244, 19160, 21240, 21555, 22992, 28261, 28740, 34488, 38320, 42480, 43110, 56522, 57480, 68976, 84783, 86220, 113044, 114960, 141305, 169566, 172440, 226088, 254349, 282610, 339132, 344880, 423915, 452176, 508698, 565220, 678264, 847830, 1017396, 1130440, 1271745, 1356528, 1695660, 2034792, 2260880, 2543490, 3391320, 4069584, 5086980, 6782640, 10173960, 20347920]

約数ペア:

[(1, 20347920), (2, 10173960), (3, 6782640), (4, 5086980), (5, 4069584), (6, 3391320), (8, 2543490), (9, 2260880), (10, 2034792), (12, 1695660), (15, 1356528), (16, 1271745), (18, 1130440), (20, 1017396), (24, 847830), (30, 678264), (36, 565220), (40, 508698), (45, 452176), (48, 423915), (59, 344880), (60, 339132), (72, 282610), (80, 254349), (90, 226088), (118, 172440), (120, 169566), (144, 141305), (177, 114960), (180, 113044), (236, 86220), (240, 84783), (295, 68976), (354, 57480), (360, 56522), (472, 43110), (479, 42480), (531, 38320), (590, 34488), (708, 28740), (720, 28261), (885, 22992), (944, 21555), (958, 21240), (1062, 19160), (1180, 17244), (1416, 14370), (1437, 14160), (1770, 11496), (1916, 10620), (2124, 9580), (2360, 8622), (2395, 8496), (2655, 7664), (2832, 7185), (2874, 7080), (3540, 5748), (3832, 5310), (4248, 4790), (4311, 4720)]