21139900413

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{421273}}^1$

素因数の和:421708

約数の個数: 16

約数和(自身を含む): 28916247360

約数和(自身を除く): 7776346947

約数列:

[1, 3, 43, 129, 389, 1167, 16727, 50181, 421273, 1263819, 18114739, 54344217, 163875197, 491625591, 7046633471, 21139900413]

約数ペア:

[(1, 21139900413), (3, 7046633471), (43, 491625591), (129, 163875197), (389, 54344217), (1167, 18114739), (16727, 1263819), (50181, 421273)]