28659715

素因数分解:

$5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 40803840

約数和(自身を除く): 12144125

約数列:

[1, 5, 7, 35, 43, 137, 139, 215, 301, 685, 695, 959, 973, 1505, 4795, 4865, 5891, 5977, 19043, 29455, 29885, 41237, 41839, 95215, 133301, 206185, 209195, 666505, 818849, 4094245, 5731943, 28659715]

約数ペア:

[(1, 28659715), (5, 5731943), (7, 4094245), (35, 818849), (43, 666505), (137, 209195), (139, 206185), (215, 133301), (301, 95215), (685, 41839), (695, 41237), (959, 29885), (973, 29455), (1505, 19043), (4795, 5977), (4865, 5891)]