21472755

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1277}}^1$

素因数の和:1363

約数の個数: 32

約数和(自身を含む): 36806400

約数和(自身を除く): 15333645

約数列:

[1, 3, 5, 15, 19, 57, 59, 95, 177, 285, 295, 885, 1121, 1277, 3363, 3831, 5605, 6385, 16815, 19155, 24263, 72789, 75343, 121315, 226029, 363945, 376715, 1130145, 1431517, 4294551, 7157585, 21472755]

約数ペア:

[(1, 21472755), (3, 7157585), (5, 4294551), (15, 1431517), (19, 1130145), (57, 376715), (59, 363945), (95, 226029), (177, 121315), (285, 75343), (295, 72789), (885, 24263), (1121, 19155), (1277, 16815), (3363, 6385), (3831, 5605)]