21265600

素因数分解:

$2^6\times 5^2\times {\mathrm{13291}}^1$

素因数の和:13313

約数の個数: 42

約数和(自身を含む): 52330604

約数和(自身を除く): 31065004

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 13291, 26582, 53164, 66455, 106328, 132910, 212656, 265820, 332275, 425312, 531640, 664550, 850624, 1063280, 1329100, 2126560, 2658200, 4253120, 5316400, 10632800, 21265600]

約数ペア:

[(1, 21265600), (2, 10632800), (4, 5316400), (5, 4253120), (8, 2658200), (10, 2126560), (16, 1329100), (20, 1063280), (25, 850624), (32, 664550), (40, 531640), (50, 425312), (64, 332275), (80, 265820), (100, 212656), (160, 132910), (200, 106328), (320, 66455), (400, 53164), (800, 26582), (1600, 13291)]