78849920

素因数分解:

$2^7\times 5^1\times {\mathrm{123203}}^1$

素因数の和:123222

約数の個数: 32

約数和(自身を含む): 188502120

約数和(自身を除く): 109652200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123203, 246406, 492812, 616015, 985624, 1232030, 1971248, 2464060, 3942496, 4928120, 7884992, 9856240, 15769984, 19712480, 39424960, 78849920]

約数ペア:

[(1, 78849920), (2, 39424960), (4, 19712480), (5, 15769984), (8, 9856240), (10, 7884992), (16, 4928120), (20, 3942496), (32, 2464060), (40, 1971248), (64, 1232030), (80, 985624), (128, 616015), (160, 492812), (320, 246406), (640, 123203)]