21356640

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{14831}}^1$

素因数の和:14852

約数の個数: 72

約数和(自身を含む): 72884448

約数和(自身を除く): 51527808

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, 14831, 29662, 44493, 59324, 74155, 88986, 118648, 133479, 148310, 177972, 222465, 237296, 266958, 296620, 355944, 444930, 474592, 533916, 593240, 667395, 711888, 889860, 1067832, 1186480, 1334790, 1423776, 1779720, 2135664, 2372960, 2669580, 3559440, 4271328, 5339160, 7118880, 10678320, 21356640]

約数ペア:

[(1, 21356640), (2, 10678320), (3, 7118880), (4, 5339160), (5, 4271328), (6, 3559440), (8, 2669580), (9, 2372960), (10, 2135664), (12, 1779720), (15, 1423776), (16, 1334790), (18, 1186480), (20, 1067832), (24, 889860), (30, 711888), (32, 667395), (36, 593240), (40, 533916), (45, 474592), (48, 444930), (60, 355944), (72, 296620), (80, 266958), (90, 237296), (96, 222465), (120, 177972), (144, 148310), (160, 133479), (180, 118648), (240, 88986), (288, 74155), (360, 59324), (480, 44493), (720, 29662), (1440, 14831)]