21899145

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{547}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 37404288

約数和(自身を除く): 15505143

約数列:

[1, 3, 5, 15, 17, 51, 85, 157, 255, 471, 547, 785, 1641, 2355, 2669, 2735, 8007, 8205, 9299, 13345, 27897, 40035, 46495, 85879, 139485, 257637, 429395, 1288185, 1459943, 4379829, 7299715, 21899145]

約数ペア:

[(1, 21899145), (3, 7299715), (5, 4379829), (15, 1459943), (17, 1288185), (51, 429395), (85, 257637), (157, 139485), (255, 85879), (471, 46495), (547, 40035), (785, 27897), (1641, 13345), (2355, 9299), (2669, 8205), (2735, 8007)]