19768216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2837}}^1$

素因数の和:2923

約数の個数: 32

約数和(自身を含む): 40526640

約数和(自身を除く): 20758424

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2837, 3484, 5674, 6968, 11348, 22696, 36881, 73762, 147524, 190079, 295048, 380158, 760316, 1520632, 2471027, 4942054, 9884108, 19768216]

約数ペア:

[(1, 19768216), (2, 9884108), (4, 4942054), (8, 2471027), (13, 1520632), (26, 760316), (52, 380158), (67, 295048), (104, 190079), (134, 147524), (268, 73762), (536, 36881), (871, 22696), (1742, 11348), (2837, 6968), (3484, 5674)]