205870120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{607}}^1$

素因数の和:818

約数の個数: 64

約数和(自身を含む): 474969600

約数和(自身を除く): 269099480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 139, 244, 278, 305, 488, 556, 607, 610, 695, 1112, 1214, 1220, 1390, 2428, 2440, 2780, 3035, 4856, 5560, 6070, 8479, 12140, 16958, 24280, 33916, 37027, 42395, 67832, 74054, 84373, 84790, 148108, 168746, 169580, 185135, 296216, 337492, 339160, 370270, 421865, 674984, 740540, 843730, 1481080, 1687460, 3374920, 5146753, 10293506, 20587012, 25733765, 41174024, 51467530, 102935060, 205870120]

約数ペア:

[(1, 205870120), (2, 102935060), (4, 51467530), (5, 41174024), (8, 25733765), (10, 20587012), (20, 10293506), (40, 5146753), (61, 3374920), (122, 1687460), (139, 1481080), (244, 843730), (278, 740540), (305, 674984), (488, 421865), (556, 370270), (607, 339160), (610, 337492), (695, 296216), (1112, 185135), (1214, 169580), (1220, 168746), (1390, 148108), (2428, 84790), (2440, 84373), (2780, 74054), (3035, 67832), (4856, 42395), (5560, 37027), (6070, 33916), (8479, 24280), (12140, 16958)]