20547200

素因数分解:

$2^7\times 5^2\times {\mathrm{6421}}^1$

素因数の和:6445

約数の個数: 48

約数和(自身を含む): 50765910

約数和(自身を除く): 30218710

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, 6421, 12842, 25684, 32105, 51368, 64210, 102736, 128420, 160525, 205472, 256840, 321050, 410944, 513680, 642100, 821888, 1027360, 1284200, 2054720, 2568400, 4109440, 5136800, 10273600, 20547200]

約数ペア:

[(1, 20547200), (2, 10273600), (4, 5136800), (5, 4109440), (8, 2568400), (10, 2054720), (16, 1284200), (20, 1027360), (25, 821888), (32, 642100), (40, 513680), (50, 410944), (64, 321050), (80, 256840), (100, 205472), (128, 160525), (160, 128420), (200, 102736), (320, 64210), (400, 51368), (640, 32105), (800, 25684), (1600, 12842), (3200, 6421)]