21755415

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1669}}^1$

素因数の和:1767

約数の個数: 32

約数和(自身を含む): 38476800

約数和(自身を除く): 16721385

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 165, 237, 395, 869, 1185, 1669, 2607, 4345, 5007, 8345, 13035, 18359, 25035, 55077, 91795, 131851, 275385, 395553, 659255, 1450361, 1977765, 4351083, 7251805, 21755415]

約数ペア:

[(1, 21755415), (3, 7251805), (5, 4351083), (11, 1977765), (15, 1450361), (33, 659255), (55, 395553), (79, 275385), (165, 131851), (237, 91795), (395, 55077), (869, 25035), (1185, 18359), (1669, 13035), (2607, 8345), (4345, 5007)]