128787200

素因数分解:

$2^8\times 5^2\times {\mathrm{20123}}^1$

素因数の和:20149

約数の個数: 54

約数和(自身を含む): 318784284

約数和(自身を除く): 189997084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 20123, 40246, 80492, 100615, 160984, 201230, 321968, 402460, 503075, 643936, 804920, 1006150, 1287872, 1609840, 2012300, 2575744, 3219680, 4024600, 5151488, 6439360, 8049200, 12878720, 16098400, 25757440, 32196800, 64393600, 128787200]

約数ペア:

[(1, 128787200), (2, 64393600), (4, 32196800), (5, 25757440), (8, 16098400), (10, 12878720), (16, 8049200), (20, 6439360), (25, 5151488), (32, 4024600), (40, 3219680), (50, 2575744), (64, 2012300), (80, 1609840), (100, 1287872), (128, 1006150), (160, 804920), (200, 643936), (256, 503075), (320, 402460), (400, 321968), (640, 201230), (800, 160984), (1280, 100615), (1600, 80492), (3200, 40246), (6400, 20123)]