638269920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{443243}}^1$

素因数の和:443264

約数の個数: 72

約数和(自身を含む): 2178101016

約数和(自身を除く): 1539831096

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, 443243, 886486, 1329729, 1772972, 2216215, 2659458, 3545944, 3989187, 4432430, 5318916, 6648645, 7091888, 7978374, 8864860, 10637832, 13297290, 14183776, 15956748, 17729720, 19945935, 21275664, 26594580, 31913496, 35459440, 39891870, 42551328, 53189160, 63826992, 70918880, 79783740, 106378320, 127653984, 159567480, 212756640, 319134960, 638269920]

約数ペア:

[(1, 638269920), (2, 319134960), (3, 212756640), (4, 159567480), (5, 127653984), (6, 106378320), (8, 79783740), (9, 70918880), (10, 63826992), (12, 53189160), (15, 42551328), (16, 39891870), (18, 35459440), (20, 31913496), (24, 26594580), (30, 21275664), (32, 19945935), (36, 17729720), (40, 15956748), (45, 14183776), (48, 13297290), (60, 10637832), (72, 8864860), (80, 7978374), (90, 7091888), (96, 6648645), (120, 5318916), (144, 4432430), (160, 3989187), (180, 3545944), (240, 2659458), (288, 2216215), (360, 1772972), (480, 1329729), (720, 886486), (1440, 443243)]