21103617605

素因数分解:

$5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1550027}}^1$

素因数の和:1550428

約数の個数: 16

約数和(自身を含む): 29016524160

約数和(自身を除く): 7912906555

約数列:

[1, 5, 7, 35, 389, 1945, 2723, 13615, 1550027, 7750135, 10850189, 54250945, 602960503, 3014802515, 4220723521, 21103617605]

約数ペア:

[(1, 21103617605), (5, 4220723521), (7, 3014802515), (35, 602960503), (389, 54250945), (1945, 10850189), (2723, 7750135), (13615, 1550027)]