21093904

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{269}}^1$

素因数の和:332

約数の個数: 60

約数和(自身を含む): 45951300

約数和(自身を除く): 24857396

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 104, 116, 169, 208, 232, 269, 338, 377, 464, 538, 676, 754, 1076, 1352, 1508, 2152, 2704, 3016, 3497, 4304, 4901, 6032, 6994, 7801, 9802, 13988, 15602, 19604, 27976, 31204, 39208, 45461, 55952, 62408, 78416, 90922, 101413, 124816, 181844, 202826, 363688, 405652, 727376, 811304, 1318369, 1622608, 2636738, 5273476, 10546952, 21093904]

約数ペア:

[(1, 21093904), (2, 10546952), (4, 5273476), (8, 2636738), (13, 1622608), (16, 1318369), (26, 811304), (29, 727376), (52, 405652), (58, 363688), (104, 202826), (116, 181844), (169, 124816), (208, 101413), (232, 90922), (269, 78416), (338, 62408), (377, 55952), (464, 45461), (538, 39208), (676, 31204), (754, 27976), (1076, 19604), (1352, 15602), (1508, 13988), (2152, 9802), (2704, 7801), (3016, 6994), (3497, 6032), (4304, 4901)]