21653786

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:459

約数の個数: 48

約数和(自身を含む): 42107040

約数和(自身を除く): 20453254

約数列:

[1, 2, 7, 11, 14, 22, 49, 53, 77, 98, 106, 154, 371, 379, 539, 583, 742, 758, 1078, 1166, 2597, 2653, 4081, 4169, 5194, 5306, 8162, 8338, 18571, 20087, 28567, 29183, 37142, 40174, 57134, 58366, 140609, 204281, 220957, 281218, 408562, 441914, 984263, 1546699, 1968526, 3093398, 10826893, 21653786]

約数ペア:

[(1, 21653786), (2, 10826893), (7, 3093398), (11, 1968526), (14, 1546699), (22, 984263), (49, 441914), (53, 408562), (77, 281218), (98, 220957), (106, 204281), (154, 140609), (371, 58366), (379, 57134), (539, 40174), (583, 37142), (742, 29183), (758, 28567), (1078, 20087), (1166, 18571), (2597, 8338), (2653, 8162), (4081, 5306), (4169, 5194)]