251036780

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{1237}}^1$

素因数の和:1458

約数の個数: 48

約数和(自身を含む): 538678560

約数和(自身を除く): 287641780

約数列:

[1, 2, 4, 5, 10, 20, 73, 139, 146, 278, 292, 365, 556, 695, 730, 1237, 1390, 1460, 2474, 2780, 4948, 6185, 10147, 12370, 20294, 24740, 40588, 50735, 90301, 101470, 171943, 180602, 202940, 343886, 361204, 451505, 687772, 859715, 903010, 1719430, 1806020, 3438860, 12551839, 25103678, 50207356, 62759195, 125518390, 251036780]

約数ペア:

[(1, 251036780), (2, 125518390), (4, 62759195), (5, 50207356), (10, 25103678), (20, 12551839), (73, 3438860), (139, 1806020), (146, 1719430), (278, 903010), (292, 859715), (365, 687772), (556, 451505), (695, 361204), (730, 343886), (1237, 202940), (1390, 180602), (1460, 171943), (2474, 101470), (2780, 90301), (4948, 50735), (6185, 40588), (10147, 24740), (12370, 20294)]