20185287561

素因数分解:

$3^6\times {\mathrm{1289}}^1\times {\mathrm{21481}}^1$

素因数の和:22788

約数の個数: 28

約数和(自身を含む): 30288975540

約数和(自身を除く): 10103687979

約数列:

[1, 3, 9, 27, 81, 243, 729, 1289, 3867, 11601, 21481, 34803, 64443, 104409, 193329, 313227, 579987, 939681, 1739961, 5219883, 15659649, 27689009, 83067027, 249201081, 747603243, 2242809729, 6728429187, 20185287561]

約数ペア:

[(1, 20185287561), (3, 6728429187), (9, 2242809729), (27, 747603243), (81, 249201081), (243, 83067027), (729, 27689009), (1289, 15659649), (3867, 5219883), (11601, 1739961), (21481, 939681), (34803, 579987), (64443, 313227), (104409, 193329)]