28221270

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1$

素因数の和:690

約数の個数: 128

約数和(自身を含む): 89026560

約数和(自身を除く): 60805290

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 19, 21, 22, 30, 33, 35, 38, 42, 55, 57, 66, 70, 77, 95, 105, 110, 114, 133, 154, 165, 190, 209, 210, 231, 266, 285, 330, 385, 399, 418, 462, 570, 627, 643, 665, 770, 798, 1045, 1155, 1254, 1286, 1330, 1463, 1929, 1995, 2090, 2310, 2926, 3135, 3215, 3858, 3990, 4389, 4501, 6270, 6430, 7073, 7315, 8778, 9002, 9645, 12217, 13503, 14146, 14630, 19290, 21219, 21945, 22505, 24434, 27006, 35365, 36651, 42438, 43890, 45010, 49511, 61085, 67515, 70730, 73302, 85519, 99022, 106095, 122170, 134387, 135030, 148533, 171038, 183255, 212190, 247555, 256557, 268774, 297066, 366510, 403161, 427595, 495110, 513114, 671935, 742665, 806322, 855190, 940709, 1282785, 1343870, 1485330, 1881418, 2015805, 2565570, 2822127, 4031610, 4703545, 5644254, 9407090, 14110635, 28221270]

約数ペア:

[(1, 28221270), (2, 14110635), (3, 9407090), (5, 5644254), (6, 4703545), (7, 4031610), (10, 2822127), (11, 2565570), (14, 2015805), (15, 1881418), (19, 1485330), (21, 1343870), (22, 1282785), (30, 940709), (33, 855190), (35, 806322), (38, 742665), (42, 671935), (55, 513114), (57, 495110), (66, 427595), (70, 403161), (77, 366510), (95, 297066), (105, 268774), (110, 256557), (114, 247555), (133, 212190), (154, 183255), (165, 171038), (190, 148533), (209, 135030), (210, 134387), (231, 122170), (266, 106095), (285, 99022), (330, 85519), (385, 73302), (399, 70730), (418, 67515), (462, 61085), (570, 49511), (627, 45010), (643, 43890), (665, 42438), (770, 36651), (798, 35365), (1045, 27006), (1155, 24434), (1254, 22505), (1286, 21945), (1330, 21219), (1463, 19290), (1929, 14630), (1995, 14146), (2090, 13503), (2310, 12217), (2926, 9645), (3135, 9002), (3215, 8778), (3858, 7315), (3990, 7073), (4389, 6430), (4501, 6270)]