16665831

素因数分解:

$3^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1$

素因数の和:75

約数の個数: 120

約数和(自身を含む): 34760880

約数和(自身を除く): 18095049

約数列:

[1, 3, 7, 9, 13, 17, 19, 21, 27, 39, 49, 51, 57, 63, 81, 91, 117, 119, 133, 147, 153, 171, 189, 221, 247, 273, 323, 351, 357, 399, 441, 459, 513, 567, 637, 663, 741, 819, 833, 931, 969, 1053, 1071, 1197, 1323, 1377, 1539, 1547, 1729, 1911, 1989, 2223, 2261, 2457, 2499, 2793, 2907, 3213, 3591, 3969, 4199, 4641, 5187, 5733, 5967, 6669, 6783, 7371, 7497, 8379, 8721, 9639, 10773, 10829, 12103, 12597, 13923, 15561, 15827, 17199, 17901, 20007, 20349, 22491, 25137, 26163, 29393, 32487, 36309, 37791, 41769, 46683, 47481, 51597, 61047, 67473, 75411, 88179, 97461, 108927, 113373, 125307, 140049, 142443, 183141, 205751, 264537, 292383, 326781, 340119, 427329, 617253, 793611, 877149, 980343, 1281987, 1851759, 2380833, 5555277, 16665831]

約数ペア:

[(1, 16665831), (3, 5555277), (7, 2380833), (9, 1851759), (13, 1281987), (17, 980343), (19, 877149), (21, 793611), (27, 617253), (39, 427329), (49, 340119), (51, 326781), (57, 292383), (63, 264537), (81, 205751), (91, 183141), (117, 142443), (119, 140049), (133, 125307), (147, 113373), (153, 108927), (171, 97461), (189, 88179), (221, 75411), (247, 67473), (273, 61047), (323, 51597), (351, 47481), (357, 46683), (399, 41769), (441, 37791), (459, 36309), (513, 32487), (567, 29393), (637, 26163), (663, 25137), (741, 22491), (819, 20349), (833, 20007), (931, 17901), (969, 17199), (1053, 15827), (1071, 15561), (1197, 13923), (1323, 12597), (1377, 12103), (1539, 10829), (1547, 10773), (1729, 9639), (1911, 8721), (1989, 8379), (2223, 7497), (2261, 7371), (2457, 6783), (2499, 6669), (2793, 5967), (2907, 5733), (3213, 5187), (3591, 4641), (3969, 4199)]