19712480

素因数分解:

$2^5\times 5^1\times {\mathrm{123203}}^1$

素因数の和:123218

約数の個数: 24

約数和(自身を含む): 46571112

約数和(自身を除く): 26858632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123203, 246406, 492812, 616015, 985624, 1232030, 1971248, 2464060, 3942496, 4928120, 9856240, 19712480]

約数ペア:

[(1, 19712480), (2, 9856240), (4, 4928120), (5, 3942496), (8, 2464060), (10, 1971248), (16, 1232030), (20, 985624), (32, 616015), (40, 492812), (80, 246406), (160, 123203)]