20393764

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1$

素因数の和:220

約数の個数: 48

約数和(自身を含む): 39372480

約数和(自身を除く): 18978716

約数列:

[1, 2, 4, 19, 38, 53, 61, 76, 83, 106, 122, 166, 212, 244, 332, 1007, 1159, 1577, 2014, 2318, 3154, 3233, 4028, 4399, 4636, 5063, 6308, 6466, 8798, 10126, 12932, 17596, 20252, 61427, 83581, 96197, 122854, 167162, 192394, 245708, 268339, 334324, 384788, 536678, 1073356, 5098441, 10196882, 20393764]

約数ペア:

[(1, 20393764), (2, 10196882), (4, 5098441), (19, 1073356), (38, 536678), (53, 384788), (61, 334324), (76, 268339), (83, 245708), (106, 192394), (122, 167162), (166, 122854), (212, 96197), (244, 83581), (332, 61427), (1007, 20252), (1159, 17596), (1577, 12932), (2014, 10126), (2318, 8798), (3154, 6466), (3233, 6308), (4028, 5063), (4399, 4636)]