20724800

素因数分解:

$2^6\times 5^2\times {\mathrm{12953}}^1$

素因数の和:12975

約数の個数: 42

約数和(自身を含む): 50999898

約数和(自身を除く): 30275098

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12953, 25906, 51812, 64765, 103624, 129530, 207248, 259060, 323825, 414496, 518120, 647650, 828992, 1036240, 1295300, 2072480, 2590600, 4144960, 5181200, 10362400, 20724800]

約数ペア:

[(1, 20724800), (2, 10362400), (4, 5181200), (5, 4144960), (8, 2590600), (10, 2072480), (16, 1295300), (20, 1036240), (25, 828992), (32, 647650), (40, 518120), (50, 414496), (64, 323825), (80, 259060), (100, 207248), (160, 129530), (200, 103624), (320, 64765), (400, 51812), (800, 25906), (1600, 12953)]