81690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 224640

約数和(自身を除く): 142950

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389, 778, 1167, 1945, 2334, 2723, 3890, 5446, 5835, 8169, 11670, 13615, 16338, 27230, 40845, 81690]

約数ペア:

[(1, 81690), (2, 40845), (3, 27230), (5, 16338), (6, 13615), (7, 11670), (10, 8169), (14, 5835), (15, 5446), (21, 3890), (30, 2723), (35, 2334), (42, 1945), (70, 1167), (105, 778), (210, 389)]