20509920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14243}}^1$

素因数の和:14264

約数の個数: 72

約数和(自身を含む): 69995016

約数和(自身を除く): 49485096

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 14243, 28486, 42729, 56972, 71215, 85458, 113944, 128187, 142430, 170916, 213645, 227888, 256374, 284860, 341832, 427290, 455776, 512748, 569720, 640935, 683664, 854580, 1025496, 1139440, 1281870, 1367328, 1709160, 2050992, 2278880, 2563740, 3418320, 4101984, 5127480, 6836640, 10254960, 20509920]

約数ペア:

[(1, 20509920), (2, 10254960), (3, 6836640), (4, 5127480), (5, 4101984), (6, 3418320), (8, 2563740), (9, 2278880), (10, 2050992), (12, 1709160), (15, 1367328), (16, 1281870), (18, 1139440), (20, 1025496), (24, 854580), (30, 683664), (32, 640935), (36, 569720), (40, 512748), (45, 455776), (48, 427290), (60, 341832), (72, 284860), (80, 256374), (90, 227888), (96, 213645), (120, 170916), (144, 142430), (160, 128187), (180, 113944), (240, 85458), (288, 71215), (360, 56972), (480, 42729), (720, 28486), (1440, 14243)]