1321800921

素因数分解:

$3^2\times 7^4\times {\mathrm{61169}}^1$

素因数の和:61203

約数の個数: 30

約数和(自身を含む): 2227383210

約数和(自身を除く): 905582289

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 2401, 3087, 7203, 21609, 61169, 183507, 428183, 550521, 1284549, 2997281, 3853647, 8991843, 20980967, 26975529, 62942901, 146866769, 188828703, 440600307, 1321800921]

約数ペア:

[(1, 1321800921), (3, 440600307), (7, 188828703), (9, 146866769), (21, 62942901), (49, 26975529), (63, 20980967), (147, 8991843), (343, 3853647), (441, 2997281), (1029, 1284549), (2401, 550521), (3087, 428183), (7203, 183507), (21609, 61169)]