20963943

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{179}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 41109120

約数和(自身を除く): 20145177

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 117, 143, 169, 179, 231, 273, 429, 507, 537, 693, 819, 1001, 1183, 1253, 1287, 1521, 1611, 1859, 1969, 2327, 3003, 3549, 3759, 5577, 5907, 6981, 9009, 10647, 11277, 13013, 13783, 16289, 16731, 17721, 20943, 25597, 30251, 39039, 41349, 48867, 76791, 90753, 117117, 124047, 146601, 179179, 211757, 230373, 272259, 332761, 537537, 635271, 998283, 1612611, 1905813, 2329327, 2994849, 6987981, 20963943]

約数ペア:

[(1, 20963943), (3, 6987981), (7, 2994849), (9, 2329327), (11, 1905813), (13, 1612611), (21, 998283), (33, 635271), (39, 537537), (63, 332761), (77, 272259), (91, 230373), (99, 211757), (117, 179179), (143, 146601), (169, 124047), (179, 117117), (231, 90753), (273, 76791), (429, 48867), (507, 41349), (537, 39039), (693, 30251), (819, 25597), (1001, 20943), (1183, 17721), (1253, 16731), (1287, 16289), (1521, 13783), (1611, 13013), (1859, 11277), (1969, 10647), (2327, 9009), (3003, 6981), (3549, 5907), (3759, 5577)]