21993760

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1361}}^1$

素因数の和:1477

約数の個数: 48

約数和(自身を含む): 52513272

約数和(自身を除く): 30519512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1361, 1616, 2020, 2722, 3232, 4040, 5444, 6805, 8080, 10888, 13610, 16160, 21776, 27220, 43552, 54440, 108880, 137461, 217760, 274922, 549844, 687305, 1099688, 1374610, 2199376, 2749220, 4398752, 5498440, 10996880, 21993760]

約数ペア:

[(1, 21993760), (2, 10996880), (4, 5498440), (5, 4398752), (8, 2749220), (10, 2199376), (16, 1374610), (20, 1099688), (32, 687305), (40, 549844), (80, 274922), (101, 217760), (160, 137461), (202, 108880), (404, 54440), (505, 43552), (808, 27220), (1010, 21776), (1361, 16160), (1616, 13610), (2020, 10888), (2722, 8080), (3232, 6805), (4040, 5444)]