18990195

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{3691}}^1$

素因数の和:3720

約数の個数: 32

約数和(自身を含む): 35443200

約数和(自身を除く): 16453005

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 3691, 5145, 11073, 18455, 25837, 55365, 77511, 129185, 180859, 387555, 542577, 904295, 1266013, 2712885, 3798039, 6330065, 18990195]

約数ペア:

[(1, 18990195), (3, 6330065), (5, 3798039), (7, 2712885), (15, 1266013), (21, 904295), (35, 542577), (49, 387555), (105, 180859), (147, 129185), (245, 77511), (343, 55365), (735, 25837), (1029, 18455), (1715, 11073), (3691, 5145)]