21204134

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{53}}^1$

素因数の和:161

約数の個数: 48

約数和(自身を含む): 40194144

約数和(自身を除く): 18990010

約数列:

[1, 2, 7, 14, 17, 34, 41, 53, 82, 106, 119, 238, 287, 371, 574, 697, 742, 901, 1394, 1681, 1802, 2173, 3362, 4346, 4879, 6307, 9758, 11767, 12614, 15211, 23534, 28577, 30422, 36941, 57154, 73882, 89093, 178186, 200039, 258587, 400078, 517174, 623651, 1247302, 1514581, 3029162, 10602067, 21204134]

約数ペア:

[(1, 21204134), (2, 10602067), (7, 3029162), (14, 1514581), (17, 1247302), (34, 623651), (41, 517174), (53, 400078), (82, 258587), (106, 200039), (119, 178186), (238, 89093), (287, 73882), (371, 57154), (574, 36941), (697, 30422), (742, 28577), (901, 23534), (1394, 15211), (1681, 12614), (1802, 11767), (2173, 9758), (3362, 6307), (4346, 4879)]