21418265

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2251}}^1$

素因数の和:2440

約数の個数: 16

約数和(自身を含む): 28213056

約数和(自身を除く): 6794791

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2251, 9515, 11255, 24761, 123805, 389423, 1947115, 4283653, 21418265]

約数ペア:

[(1, 21418265), (5, 4283653), (11, 1947115), (55, 389423), (173, 123805), (865, 24761), (1903, 11255), (2251, 9515)]