21044375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{3061}}^1$

素因数の和:3092

約数の個数: 20

約数和(自身を含む): 28697064

約数和(自身を除く): 7652689

約数列:

[1, 5, 11, 25, 55, 125, 275, 625, 1375, 3061, 6875, 15305, 33671, 76525, 168355, 382625, 841775, 1913125, 4208875, 21044375]

約数ペア:

[(1, 21044375), (5, 4208875), (11, 1913125), (25, 841775), (55, 382625), (125, 168355), (275, 76525), (625, 33671), (1375, 15305), (3061, 6875)]