19561101

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 31852800

約数和(自身を除く): 12291699

約数列:

[1, 3, 7, 17, 21, 51, 119, 157, 349, 357, 471, 1047, 1099, 2443, 2669, 3297, 5933, 7329, 8007, 17799, 18683, 41531, 54793, 56049, 124593, 164379, 383551, 931481, 1150653, 2794443, 6520367, 19561101]

約数ペア:

[(1, 19561101), (3, 6520367), (7, 2794443), (17, 1150653), (21, 931481), (51, 383551), (119, 164379), (157, 124593), (349, 56049), (357, 54793), (471, 41531), (1047, 18683), (1099, 17799), (2443, 8007), (2669, 7329), (3297, 5933)]