21292400

素因数分解:

$2^4\times 5^2\times {\mathrm{53231}}^1$

素因数の和:53249

約数の個数: 30

約数和(自身を含む): 51155952

約数和(自身を除く): 29863552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 53231, 106462, 212924, 266155, 425848, 532310, 851696, 1064620, 1330775, 2129240, 2661550, 4258480, 5323100, 10646200, 21292400]

約数ペア:

[(1, 21292400), (2, 10646200), (4, 5323100), (5, 4258480), (8, 2661550), (10, 2129240), (16, 1330775), (20, 1064620), (25, 851696), (40, 532310), (50, 425848), (80, 266155), (100, 212924), (200, 106462), (400, 53231)]