388381889

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1993}}^1$

素因数の和:2145

約数の個数: 24

約数和(自身を含む): 467816328

約数和(自身を除く): 79434439

約数列:

[1, 7, 41, 49, 97, 287, 679, 1993, 2009, 3977, 4753, 13951, 27839, 81713, 97657, 193321, 194873, 571991, 1353247, 4003937, 7926161, 9472729, 55483127, 388381889]

約数ペア:

[(1, 388381889), (7, 55483127), (41, 9472729), (49, 7926161), (97, 4003937), (287, 1353247), (679, 571991), (1993, 194873), (2009, 193321), (3977, 97657), (4753, 81713), (13951, 27839)]