81943890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{390209}}^1$

素因数の和:390226

約数の個数: 32

約数和(自身を含む): 224760960

約数和(自身を除く): 142817070

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 390209, 780418, 1170627, 1951045, 2341254, 2731463, 3902090, 5462926, 5853135, 8194389, 11706270, 13657315, 16388778, 27314630, 40971945, 81943890]

約数ペア:

[(1, 81943890), (2, 40971945), (3, 27314630), (5, 16388778), (6, 13657315), (7, 11706270), (10, 8194389), (14, 5853135), (15, 5462926), (21, 3902090), (30, 2731463), (35, 2341254), (42, 1951045), (70, 1170627), (105, 780418), (210, 390209)]