21000888018

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^3\times {\mathrm{17}}^1\times {\mathrm{51563}}^1$

素因数の和:51621

約数の個数: 96

約数和(自身を含む): 52993766592

約数和(自身を除く): 31992878574

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 33, 34, 51, 66, 99, 102, 121, 153, 187, 198, 242, 306, 363, 374, 561, 726, 1089, 1122, 1331, 1683, 2057, 2178, 2662, 3366, 3993, 4114, 6171, 7986, 11979, 12342, 18513, 22627, 23958, 37026, 45254, 51563, 67881, 103126, 135762, 154689, 203643, 309378, 407286, 464067, 567193, 876571, 928134, 1134386, 1701579, 1753142, 2629713, 3403158, 5104737, 5259426, 6239123, 7889139, 9642281, 10209474, 12478246, 15778278, 18717369, 19284562, 28926843, 37434738, 56152107, 57853686, 68630353, 86780529, 106065091, 112304214, 137260706, 173561058, 205891059, 212130182, 318195273, 411782118, 617673177, 636390546, 954585819, 1166716001, 1235346354, 1909171638, 2333432002, 3500148003, 7000296006, 10500444009, 21000888018]

約数ペア:

[(1, 21000888018), (2, 10500444009), (3, 7000296006), (6, 3500148003), (9, 2333432002), (11, 1909171638), (17, 1235346354), (18, 1166716001), (22, 954585819), (33, 636390546), (34, 617673177), (51, 411782118), (66, 318195273), (99, 212130182), (102, 205891059), (121, 173561058), (153, 137260706), (187, 112304214), (198, 106065091), (242, 86780529), (306, 68630353), (363, 57853686), (374, 56152107), (561, 37434738), (726, 28926843), (1089, 19284562), (1122, 18717369), (1331, 15778278), (1683, 12478246), (2057, 10209474), (2178, 9642281), (2662, 7889139), (3366, 6239123), (3993, 5259426), (4114, 5104737), (6171, 3403158), (7986, 2629713), (11979, 1753142), (12342, 1701579), (18513, 1134386), (22627, 928134), (23958, 876571), (37026, 567193), (45254, 464067), (51563, 407286), (67881, 309378), (103126, 203643), (135762, 154689)]