20919726

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{101}}^1\times {\mathrm{311}}^1$

素因数の和:457

約数の個数: 48

約数和(自身を含む): 47163168

約数和(自身を除く): 26243442

約数列:

[1, 2, 3, 6, 9, 18, 37, 74, 101, 111, 202, 222, 303, 311, 333, 606, 622, 666, 909, 933, 1818, 1866, 2799, 3737, 5598, 7474, 11211, 11507, 22422, 23014, 31411, 33633, 34521, 62822, 67266, 69042, 94233, 103563, 188466, 207126, 282699, 565398, 1162207, 2324414, 3486621, 6973242, 10459863, 20919726]

約数ペア:

[(1, 20919726), (2, 10459863), (3, 6973242), (6, 3486621), (9, 2324414), (18, 1162207), (37, 565398), (74, 282699), (101, 207126), (111, 188466), (202, 103563), (222, 94233), (303, 69042), (311, 67266), (333, 62822), (606, 34521), (622, 33633), (666, 31411), (909, 23014), (933, 22422), (1818, 11507), (1866, 11211), (2799, 7474), (3737, 5598)]