21235179

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{7603}}^1$

素因数の和:7639

約数の個数: 24

約数和(自身を含む): 34674240

約数和(自身を除く): 13439061

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 7603, 22809, 53221, 144457, 159663, 372547, 433371, 1011199, 1117641, 3033597, 7078393, 21235179]

約数ペア:

[(1, 21235179), (3, 7078393), (7, 3033597), (19, 1117641), (21, 1011199), (49, 433371), (57, 372547), (133, 159663), (147, 144457), (399, 53221), (931, 22809), (2793, 7603)]