21432873

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 38191104

約数和(自身を除く): 16758231

約数列:

[1, 3, 7, 11, 21, 31, 33, 41, 73, 77, 93, 123, 217, 219, 231, 287, 341, 451, 511, 651, 803, 861, 1023, 1271, 1353, 1533, 2263, 2387, 2409, 2993, 3157, 3813, 5621, 6789, 7161, 8897, 8979, 9471, 13981, 15841, 16863, 20951, 24893, 26691, 32923, 41943, 47523, 62853, 74679, 92783, 97867, 98769, 174251, 230461, 278349, 293601, 522753, 649481, 691383, 1020613, 1948443, 3061839, 7144291, 21432873]

約数ペア:

[(1, 21432873), (3, 7144291), (7, 3061839), (11, 1948443), (21, 1020613), (31, 691383), (33, 649481), (41, 522753), (73, 293601), (77, 278349), (93, 230461), (123, 174251), (217, 98769), (219, 97867), (231, 92783), (287, 74679), (341, 62853), (451, 47523), (511, 41943), (651, 32923), (803, 26691), (861, 24893), (1023, 20951), (1271, 16863), (1353, 15841), (1533, 13981), (2263, 9471), (2387, 8979), (2409, 8897), (2993, 7161), (3157, 6789), (3813, 5621)]