28021315

素因数分解:

$5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1249}}^1$

素因数の和:1902

約数の個数: 16

約数和(自身を含む): 38520000

約数和(自身を除く): 10498685

約数列:

[1, 5, 7, 35, 641, 1249, 3205, 4487, 6245, 8743, 22435, 43715, 800609, 4003045, 5604263, 28021315]

約数ペア:

[(1, 28021315), (5, 5604263), (7, 4003045), (35, 800609), (641, 43715), (1249, 22435), (3205, 8743), (4487, 6245)]