18712784

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{773}}^1$

素因数の和:887

約数の個数: 40

約数和(自身を含む): 38870280

約数和(自身を除く): 20157496

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 89, 136, 178, 272, 356, 712, 773, 1424, 1513, 1546, 3026, 3092, 6052, 6184, 12104, 12368, 13141, 24208, 26282, 52564, 68797, 105128, 137594, 210256, 275188, 550376, 1100752, 1169549, 2339098, 4678196, 9356392, 18712784]

約数ペア:

[(1, 18712784), (2, 9356392), (4, 4678196), (8, 2339098), (16, 1169549), (17, 1100752), (34, 550376), (68, 275188), (89, 210256), (136, 137594), (178, 105128), (272, 68797), (356, 52564), (712, 26282), (773, 24208), (1424, 13141), (1513, 12368), (1546, 12104), (3026, 6184), (3092, 6052)]