28987567

素因数分解:

$7^2\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 36

約数和(自身を含む): 37797840

約数和(自身を除く): 8810273

約数列:

[1, 7, 17, 23, 49, 89, 119, 161, 289, 391, 623, 833, 1127, 1513, 2023, 2047, 2737, 4361, 6647, 10591, 14161, 14329, 19159, 25721, 34799, 46529, 74137, 100303, 180047, 243593, 325703, 591583, 1260329, 1705151, 4141081, 28987567]

約数ペア:

[(1, 28987567), (7, 4141081), (17, 1705151), (23, 1260329), (49, 591583), (89, 325703), (119, 243593), (161, 180047), (289, 100303), (391, 74137), (623, 46529), (833, 34799), (1127, 25721), (1513, 19159), (2023, 14329), (2047, 14161), (2737, 10591), (4361, 6647)]