21308800

素因数分解:

$2^7\times 5^2\times {\mathrm{6659}}^1$

素因数の和:6683

約数の個数: 48

約数和(自身を含む): 52647300

約数和(自身を除く): 31338500

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 6659, 13318, 26636, 33295, 53272, 66590, 106544, 133180, 166475, 213088, 266360, 332950, 426176, 532720, 665900, 852352, 1065440, 1331800, 2130880, 2663600, 4261760, 5327200, 10654400, 21308800]

約数ペア:

[(1, 21308800), (2, 10654400), (4, 5327200), (5, 4261760), (8, 2663600), (10, 2130880), (16, 1331800), (20, 1065440), (25, 852352), (32, 665900), (40, 532720), (50, 426176), (64, 332950), (80, 266360), (100, 213088), (128, 166475), (160, 133180), (200, 106544), (320, 66590), (400, 53272), (640, 33295), (800, 26636), (1600, 13318), (3200, 6659)]