20688796

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 41126400

約数和(自身を除く): 20437604

約数列:

[1, 2, 4, 17, 19, 34, 38, 67, 68, 76, 134, 239, 268, 323, 478, 646, 956, 1139, 1273, 1292, 2278, 2546, 4063, 4541, 4556, 5092, 8126, 9082, 16013, 16252, 18164, 21641, 32026, 43282, 64052, 77197, 86564, 154394, 272221, 304247, 308788, 544442, 608494, 1088884, 1216988, 5172199, 10344398, 20688796]

約数ペア:

[(1, 20688796), (2, 10344398), (4, 5172199), (17, 1216988), (19, 1088884), (34, 608494), (38, 544442), (67, 308788), (68, 304247), (76, 272221), (134, 154394), (239, 86564), (268, 77197), (323, 64052), (478, 43282), (646, 32026), (956, 21641), (1139, 18164), (1273, 16252), (1292, 16013), (2278, 9082), (2546, 8126), (4063, 5092), (4541, 4556)]