19669797

素因数分解:

$3^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:439

約数の個数: 40

約数和(自身を含む): 33988416

約数和(自身を除く): 14318619

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 113, 189, 307, 339, 567, 791, 921, 1017, 2149, 2373, 2763, 3051, 6447, 7119, 8289, 9153, 19341, 21357, 24867, 34691, 58023, 64071, 104073, 174069, 242837, 312219, 728511, 936657, 2185533, 2809971, 6556599, 19669797]

約数ペア:

[(1, 19669797), (3, 6556599), (7, 2809971), (9, 2185533), (21, 936657), (27, 728511), (63, 312219), (81, 242837), (113, 174069), (189, 104073), (307, 64071), (339, 58023), (567, 34691), (791, 24867), (921, 21357), (1017, 19341), (2149, 9153), (2373, 8289), (2763, 7119), (3051, 6447)]