18808640

素因数分解:

$2^6\times 5^1\times {\mathrm{53}}^1\times {\mathrm{1109}}^1$

素因数の和:1179

約数の個数: 56

約数和(自身を含む): 45674280

約数和(自身を除く): 26865640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 160, 212, 265, 320, 424, 530, 848, 1060, 1109, 1696, 2120, 2218, 3392, 4240, 4436, 5545, 8480, 8872, 11090, 16960, 17744, 22180, 35488, 44360, 58777, 70976, 88720, 117554, 177440, 235108, 293885, 354880, 470216, 587770, 940432, 1175540, 1880864, 2351080, 3761728, 4702160, 9404320, 18808640]

約数ペア:

[(1, 18808640), (2, 9404320), (4, 4702160), (5, 3761728), (8, 2351080), (10, 1880864), (16, 1175540), (20, 940432), (32, 587770), (40, 470216), (53, 354880), (64, 293885), (80, 235108), (106, 177440), (160, 117554), (212, 88720), (265, 70976), (320, 58777), (424, 44360), (530, 35488), (848, 22180), (1060, 17744), (1109, 16960), (1696, 11090), (2120, 8872), (2218, 8480), (3392, 5545), (4240, 4436)]