21157884

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{101}}^1$

素因数の和:168

約数の個数: 108

約数和(自身を含む): 61595352

約数和(自身を除く): 40437468

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 23, 33, 36, 44, 46, 66, 69, 92, 99, 101, 132, 138, 198, 202, 207, 253, 276, 303, 396, 404, 414, 506, 529, 606, 759, 828, 909, 1012, 1058, 1111, 1212, 1518, 1587, 1818, 2116, 2222, 2277, 2323, 3036, 3174, 3333, 3636, 4444, 4554, 4646, 4761, 5819, 6348, 6666, 6969, 9108, 9292, 9522, 9999, 11638, 13332, 13938, 17457, 19044, 19998, 20907, 23276, 25553, 27876, 34914, 39996, 41814, 51106, 52371, 53429, 69828, 76659, 83628, 102212, 104742, 106858, 153318, 160287, 209484, 213716, 229977, 306636, 320574, 459954, 480861, 587719, 641148, 919908, 961722, 1175438, 1763157, 1923444, 2350876, 3526314, 5289471, 7052628, 10578942, 21157884]

約数ペア:

[(1, 21157884), (2, 10578942), (3, 7052628), (4, 5289471), (6, 3526314), (9, 2350876), (11, 1923444), (12, 1763157), (18, 1175438), (22, 961722), (23, 919908), (33, 641148), (36, 587719), (44, 480861), (46, 459954), (66, 320574), (69, 306636), (92, 229977), (99, 213716), (101, 209484), (132, 160287), (138, 153318), (198, 106858), (202, 104742), (207, 102212), (253, 83628), (276, 76659), (303, 69828), (396, 53429), (404, 52371), (414, 51106), (506, 41814), (529, 39996), (606, 34914), (759, 27876), (828, 25553), (909, 23276), (1012, 20907), (1058, 19998), (1111, 19044), (1212, 17457), (1518, 13938), (1587, 13332), (1818, 11638), (2116, 9999), (2222, 9522), (2277, 9292), (2323, 9108), (3036, 6969), (3174, 6666), (3333, 6348), (3636, 5819), (4444, 4761), (4554, 4646)]