640697760

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{444929}}^1$

素因数の和:444950

約数の個数: 72

約数和(自身を含む): 2186386020

約数和(自身を除く): 1545688260

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, 444929, 889858, 1334787, 1779716, 2224645, 2669574, 3559432, 4004361, 4449290, 5339148, 6673935, 7118864, 8008722, 8898580, 10678296, 13347870, 14237728, 16017444, 17797160, 20021805, 21356592, 26695740, 32034888, 35594320, 40043610, 42713184, 53391480, 64069776, 71188640, 80087220, 106782960, 128139552, 160174440, 213565920, 320348880, 640697760]

約数ペア:

[(1, 640697760), (2, 320348880), (3, 213565920), (4, 160174440), (5, 128139552), (6, 106782960), (8, 80087220), (9, 71188640), (10, 64069776), (12, 53391480), (15, 42713184), (16, 40043610), (18, 35594320), (20, 32034888), (24, 26695740), (30, 21356592), (32, 20021805), (36, 17797160), (40, 16017444), (45, 14237728), (48, 13347870), (60, 10678296), (72, 8898580), (80, 8008722), (90, 7118864), (96, 6673935), (120, 5339148), (144, 4449290), (160, 4004361), (180, 3559432), (240, 2669574), (288, 2224645), (360, 1779716), (480, 1334787), (720, 889858), (1440, 444929)]