21236306

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{211}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 40602240

約数和(自身を除く): 19365934

約数列:

[1, 2, 7, 13, 14, 26, 49, 79, 91, 98, 158, 182, 211, 422, 553, 637, 1027, 1106, 1274, 1477, 2054, 2743, 2954, 3871, 5486, 7189, 7742, 10339, 14378, 16669, 19201, 20678, 33338, 38402, 50323, 100646, 116683, 134407, 216697, 233366, 268814, 433394, 816781, 1516879, 1633562, 3033758, 10618153, 21236306]

約数ペア:

[(1, 21236306), (2, 10618153), (7, 3033758), (13, 1633562), (14, 1516879), (26, 816781), (49, 433394), (79, 268814), (91, 233366), (98, 216697), (158, 134407), (182, 116683), (211, 100646), (422, 50323), (553, 38402), (637, 33338), (1027, 20678), (1106, 19201), (1274, 16669), (1477, 14378), (2054, 10339), (2743, 7742), (2954, 7189), (3871, 5486)]