32720000

素因数分解:

$2^7\times 5^4\times {\mathrm{409}}^1$

素因数の和:443

約数の個数: 80

約数和(自身を含む): 81653550

約数和(自身を除く): 48933550

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 320, 400, 409, 500, 625, 640, 800, 818, 1000, 1250, 1600, 1636, 2000, 2045, 2500, 3200, 3272, 4000, 4090, 5000, 6544, 8000, 8180, 10000, 10225, 13088, 16000, 16360, 20000, 20450, 26176, 32720, 40000, 40900, 51125, 52352, 65440, 80000, 81800, 102250, 130880, 163600, 204500, 255625, 261760, 327200, 409000, 511250, 654400, 818000, 1022500, 1308800, 1636000, 2045000, 3272000, 4090000, 6544000, 8180000, 16360000, 32720000]

約数ペア:

[(1, 32720000), (2, 16360000), (4, 8180000), (5, 6544000), (8, 4090000), (10, 3272000), (16, 2045000), (20, 1636000), (25, 1308800), (32, 1022500), (40, 818000), (50, 654400), (64, 511250), (80, 409000), (100, 327200), (125, 261760), (128, 255625), (160, 204500), (200, 163600), (250, 130880), (320, 102250), (400, 81800), (409, 80000), (500, 65440), (625, 52352), (640, 51125), (800, 40900), (818, 40000), (1000, 32720), (1250, 26176), (1600, 20450), (1636, 20000), (2000, 16360), (2045, 16000), (2500, 13088), (3200, 10225), (3272, 10000), (4000, 8180), (4090, 8000), (5000, 6544)]