21292215

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 40383360

約数和(自身を除く): 19091145

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 59, 105, 147, 177, 245, 295, 413, 491, 735, 885, 1239, 1473, 2065, 2455, 2891, 3437, 6195, 7365, 8673, 10311, 14455, 17185, 24059, 28969, 43365, 51555, 72177, 86907, 120295, 144845, 202783, 360885, 434535, 608349, 1013915, 1419481, 3041745, 4258443, 7097405, 21292215]

約数ペア:

[(1, 21292215), (3, 7097405), (5, 4258443), (7, 3041745), (15, 1419481), (21, 1013915), (35, 608349), (49, 434535), (59, 360885), (105, 202783), (147, 144845), (177, 120295), (245, 86907), (295, 72177), (413, 51555), (491, 43365), (735, 28969), (885, 24059), (1239, 17185), (1473, 14455), (2065, 10311), (2455, 8673), (2891, 7365), (3437, 6195)]