21994940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5881}}^1$

素因数の和:5918

約数の個数: 48

約数和(自身を含む): 53361504

約数和(自身を除く): 31366564

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5881, 11762, 23524, 29405, 58810, 64691, 99977, 117620, 129382, 199954, 258764, 323455, 399908, 499885, 646910, 999770, 1099747, 1293820, 1999540, 2199494, 4398988, 5498735, 10997470, 21994940]

約数ペア:

[(1, 21994940), (2, 10997470), (4, 5498735), (5, 4398988), (10, 2199494), (11, 1999540), (17, 1293820), (20, 1099747), (22, 999770), (34, 646910), (44, 499885), (55, 399908), (68, 323455), (85, 258764), (110, 199954), (170, 129382), (187, 117620), (220, 99977), (340, 64691), (374, 58810), (748, 29405), (935, 23524), (1870, 11762), (3740, 5881)]