21000913318

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1249}}^1\times {\mathrm{2663}}^1$

素因数の和:3973

約数の個数: 64

約数和(自身を含む): 40279680000

約数和(自身を除く): 19278766682

約数列:

[1, 2, 7, 11, 14, 22, 41, 77, 82, 154, 287, 451, 574, 902, 1249, 2498, 2663, 3157, 5326, 6314, 8743, 13739, 17486, 18641, 27478, 29293, 37282, 51209, 58586, 96173, 102418, 109183, 192346, 205051, 218366, 358463, 410102, 563299, 716926, 764281, 1126598, 1201013, 1528562, 2402026, 3326087, 3943093, 6652174, 7886186, 8407091, 16814182, 23282609, 36586957, 46565218, 73173914, 136369567, 256108699, 272739134, 512217398, 954586969, 1500065237, 1909173938, 3000130474, 10500456659, 21000913318]

約数ペア:

[(1, 21000913318), (2, 10500456659), (7, 3000130474), (11, 1909173938), (14, 1500065237), (22, 954586969), (41, 512217398), (77, 272739134), (82, 256108699), (154, 136369567), (287, 73173914), (451, 46565218), (574, 36586957), (902, 23282609), (1249, 16814182), (2498, 8407091), (2663, 7886186), (3157, 6652174), (5326, 3943093), (6314, 3326087), (8743, 2402026), (13739, 1528562), (17486, 1201013), (18641, 1126598), (27478, 764281), (29293, 716926), (37282, 563299), (51209, 410102), (58586, 358463), (96173, 218366), (102418, 205051), (109183, 192346)]