21257106

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 51988608

約数和(自身を除く): 30731502

約数列:

[1, 2, 3, 6, 13, 17, 23, 26, 34, 39, 41, 46, 51, 69, 78, 82, 102, 123, 138, 221, 246, 289, 299, 391, 442, 533, 578, 598, 663, 697, 782, 867, 897, 943, 1066, 1173, 1326, 1394, 1599, 1734, 1794, 1886, 2091, 2346, 2829, 3198, 3757, 4182, 5083, 5658, 6647, 7514, 9061, 10166, 11271, 11849, 12259, 13294, 15249, 16031, 18122, 19941, 22542, 23698, 24518, 27183, 30498, 32062, 35547, 36777, 39882, 48093, 54366, 71094, 73554, 86411, 96186, 154037, 172822, 208403, 259233, 272527, 308074, 416806, 462111, 518466, 545054, 625209, 817581, 924222, 1250418, 1635162, 3542851, 7085702, 10628553, 21257106]

約数ペア:

[(1, 21257106), (2, 10628553), (3, 7085702), (6, 3542851), (13, 1635162), (17, 1250418), (23, 924222), (26, 817581), (34, 625209), (39, 545054), (41, 518466), (46, 462111), (51, 416806), (69, 308074), (78, 272527), (82, 259233), (102, 208403), (123, 172822), (138, 154037), (221, 96186), (246, 86411), (289, 73554), (299, 71094), (391, 54366), (442, 48093), (533, 39882), (578, 36777), (598, 35547), (663, 32062), (697, 30498), (782, 27183), (867, 24518), (897, 23698), (943, 22542), (1066, 19941), (1173, 18122), (1326, 16031), (1394, 15249), (1599, 13294), (1734, 12259), (1794, 11849), (1886, 11271), (2091, 10166), (2346, 9061), (2829, 7514), (3198, 6647), (3757, 5658), (4182, 5083)]