21189399

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{269}}^1$

素因数の和:332

約数の個数: 48

約数和(自身を含む): 36771840

約数和(自身を除く): 15582441

約数列:

[1, 3, 7, 11, 21, 31, 33, 77, 93, 121, 217, 231, 269, 341, 363, 651, 807, 847, 1023, 1883, 2387, 2541, 2959, 3751, 5649, 7161, 8339, 8877, 11253, 20713, 25017, 26257, 32549, 58373, 62139, 78771, 91729, 97647, 175119, 227843, 275187, 642103, 683529, 1009019, 1926309, 3027057, 7063133, 21189399]

約数ペア:

[(1, 21189399), (3, 7063133), (7, 3027057), (11, 1926309), (21, 1009019), (31, 683529), (33, 642103), (77, 275187), (93, 227843), (121, 175119), (217, 97647), (231, 91729), (269, 78771), (341, 62139), (363, 58373), (651, 32549), (807, 26257), (847, 25017), (1023, 20713), (1883, 11253), (2387, 8877), (2541, 8339), (2959, 7161), (3751, 5649)]