21759188

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{61}}^1\times {\mathrm{67}}^1$

素因数の和:165

約数の個数: 48

約数和(自身を含む): 43205568

約数和(自身を除く): 21446380

約数列:

[1, 2, 4, 11, 22, 44, 61, 67, 121, 122, 134, 242, 244, 268, 484, 671, 737, 1331, 1342, 1474, 2662, 2684, 2948, 4087, 5324, 7381, 8107, 8174, 14762, 16214, 16348, 29524, 32428, 44957, 81191, 89177, 89914, 162382, 178354, 179828, 324764, 356708, 494527, 989054, 1978108, 5439797, 10879594, 21759188]

約数ペア:

[(1, 21759188), (2, 10879594), (4, 5439797), (11, 1978108), (22, 989054), (44, 494527), (61, 356708), (67, 324764), (121, 179828), (122, 178354), (134, 162382), (242, 89914), (244, 89177), (268, 81191), (484, 44957), (671, 32428), (737, 29524), (1331, 16348), (1342, 16214), (1474, 14762), (2662, 8174), (2684, 8107), (2948, 7381), (4087, 5324)]