19892301

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{521}}^1$

素因数の和:637

約数の個数: 32

約数和(自身を含む): 31570560

約数和(自身を除く): 11678259

約数列:

[1, 3, 11, 13, 33, 39, 89, 143, 267, 429, 521, 979, 1157, 1563, 2937, 3471, 5731, 6773, 12727, 17193, 20319, 38181, 46369, 74503, 139107, 223509, 510059, 602797, 1530177, 1808391, 6630767, 19892301]

約数ペア:

[(1, 19892301), (3, 6630767), (11, 1808391), (13, 1530177), (33, 602797), (39, 510059), (89, 223509), (143, 139107), (267, 74503), (429, 46369), (521, 38181), (979, 20319), (1157, 17193), (1563, 12727), (2937, 6773), (3471, 5731)]