20211345

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{307}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 46126080

約数和(自身を除く): 25914735

約数列:

[1, 3, 5, 7, 9, 11, 15, 19, 21, 33, 35, 45, 55, 57, 63, 77, 95, 99, 105, 133, 165, 171, 209, 231, 285, 307, 315, 385, 399, 495, 627, 665, 693, 855, 921, 1045, 1155, 1197, 1463, 1535, 1881, 1995, 2149, 2763, 3135, 3377, 3465, 4389, 4605, 5833, 5985, 6447, 7315, 9405, 10131, 10745, 13167, 13815, 16885, 17499, 19341, 21945, 23639, 29165, 30393, 32235, 40831, 50655, 52497, 64163, 65835, 70917, 87495, 96705, 118195, 122493, 151965, 192489, 204155, 212751, 262485, 320815, 354585, 367479, 449141, 577467, 612465, 962445, 1063755, 1347423, 1837395, 2245705, 2887335, 4042269, 6737115, 20211345]

約数ペア:

[(1, 20211345), (3, 6737115), (5, 4042269), (7, 2887335), (9, 2245705), (11, 1837395), (15, 1347423), (19, 1063755), (21, 962445), (33, 612465), (35, 577467), (45, 449141), (55, 367479), (57, 354585), (63, 320815), (77, 262485), (95, 212751), (99, 204155), (105, 192489), (133, 151965), (165, 122493), (171, 118195), (209, 96705), (231, 87495), (285, 70917), (307, 65835), (315, 64163), (385, 52497), (399, 50655), (495, 40831), (627, 32235), (665, 30393), (693, 29165), (855, 23639), (921, 21945), (1045, 19341), (1155, 17499), (1197, 16885), (1463, 13815), (1535, 13167), (1881, 10745), (1995, 10131), (2149, 9405), (2763, 7315), (3135, 6447), (3377, 5985), (3465, 5833), (4389, 4605)]