280301220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{479}}^1\times {\mathrm{3251}}^1$

素因数の和:3745

約数の個数: 72

約数和(自身を含む): 852284160

約数和(自身を除く): 571982940

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 479, 958, 1437, 1916, 2395, 2874, 3251, 4311, 4790, 5748, 6502, 7185, 8622, 9580, 9753, 13004, 14370, 16255, 17244, 19506, 21555, 28740, 29259, 32510, 39012, 43110, 48765, 58518, 65020, 86220, 97530, 117036, 146295, 195060, 292590, 585180, 1557229, 3114458, 4671687, 6228916, 7786145, 9343374, 14015061, 15572290, 18686748, 23358435, 28030122, 31144580, 46716870, 56060244, 70075305, 93433740, 140150610, 280301220]

約数ペア:

[(1, 280301220), (2, 140150610), (3, 93433740), (4, 70075305), (5, 56060244), (6, 46716870), (9, 31144580), (10, 28030122), (12, 23358435), (15, 18686748), (18, 15572290), (20, 14015061), (30, 9343374), (36, 7786145), (45, 6228916), (60, 4671687), (90, 3114458), (180, 1557229), (479, 585180), (958, 292590), (1437, 195060), (1916, 146295), (2395, 117036), (2874, 97530), (3251, 86220), (4311, 65020), (4790, 58518), (5748, 48765), (6502, 43110), (7185, 39012), (8622, 32510), (9580, 29259), (9753, 28740), (13004, 21555), (14370, 19506), (16255, 17244)]