19881216

素因数分解:

$2^8\times 3^2\times {\mathrm{8629}}^1$

素因数の和:8651

約数の個数: 54

約数和(自身を含む): 57329090

約数和(自身を除く): 37447874

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 128, 144, 192, 256, 288, 384, 576, 768, 1152, 2304, 8629, 17258, 25887, 34516, 51774, 69032, 77661, 103548, 138064, 155322, 207096, 276128, 310644, 414192, 552256, 621288, 828384, 1104512, 1242576, 1656768, 2209024, 2485152, 3313536, 4970304, 6627072, 9940608, 19881216]

約数ペア:

[(1, 19881216), (2, 9940608), (3, 6627072), (4, 4970304), (6, 3313536), (8, 2485152), (9, 2209024), (12, 1656768), (16, 1242576), (18, 1104512), (24, 828384), (32, 621288), (36, 552256), (48, 414192), (64, 310644), (72, 276128), (96, 207096), (128, 155322), (144, 138064), (192, 103548), (256, 77661), (288, 69032), (384, 51774), (576, 34516), (768, 25887), (1152, 17258), (2304, 8629)]