21341313

素因数分解:

$3^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{283}}^1$

素因数の和:328

約数の個数: 60

約数和(自身を含む): 39174960

約数和(自身を除く): 17833647

約数列:

[1, 3, 7, 9, 19, 21, 27, 49, 57, 63, 81, 133, 147, 171, 189, 283, 399, 441, 513, 567, 849, 931, 1197, 1323, 1539, 1981, 2547, 2793, 3591, 3969, 5377, 5943, 7641, 8379, 10773, 13867, 16131, 17829, 22923, 25137, 37639, 41601, 48393, 53487, 75411, 112917, 124803, 145179, 160461, 263473, 338751, 374409, 435537, 790419, 1016253, 1123227, 2371257, 3048759, 7113771, 21341313]

約数ペア:

[(1, 21341313), (3, 7113771), (7, 3048759), (9, 2371257), (19, 1123227), (21, 1016253), (27, 790419), (49, 435537), (57, 374409), (63, 338751), (81, 263473), (133, 160461), (147, 145179), (171, 124803), (189, 112917), (283, 75411), (399, 53487), (441, 48393), (513, 41601), (567, 37639), (849, 25137), (931, 22923), (1197, 17829), (1323, 16131), (1539, 13867), (1981, 10773), (2547, 8379), (2793, 7641), (3591, 5943), (3969, 5377)]