18995895

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9817}}^1$

素因数の和:9871

約数の個数: 24

約数和(自身を含む): 33695376

約数和(自身を除く): 14699481

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 9817, 29451, 49085, 88353, 147255, 422131, 441765, 1266393, 2110655, 3799179, 6331965, 18995895]

約数ペア:

[(1, 18995895), (3, 6331965), (5, 3799179), (9, 2110655), (15, 1266393), (43, 441765), (45, 422131), (129, 147255), (215, 88353), (387, 49085), (645, 29451), (1935, 9817)]