19956664

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{347}}^1$

素因数の和:452

約数の個数: 64

約数和(自身を含む): 46771200

約数和(自身を除く): 26814536

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 79, 91, 104, 158, 182, 316, 347, 364, 553, 632, 694, 728, 1027, 1106, 1388, 2054, 2212, 2429, 2776, 4108, 4424, 4511, 4858, 7189, 8216, 9022, 9716, 14378, 18044, 19432, 27413, 28756, 31577, 36088, 54826, 57512, 63154, 109652, 126308, 191891, 219304, 252616, 356369, 383782, 712738, 767564, 1425476, 1535128, 2494583, 2850952, 4989166, 9978332, 19956664]

約数ペア:

[(1, 19956664), (2, 9978332), (4, 4989166), (7, 2850952), (8, 2494583), (13, 1535128), (14, 1425476), (26, 767564), (28, 712738), (52, 383782), (56, 356369), (79, 252616), (91, 219304), (104, 191891), (158, 126308), (182, 109652), (316, 63154), (347, 57512), (364, 54826), (553, 36088), (632, 31577), (694, 28756), (728, 27413), (1027, 19432), (1106, 18044), (1388, 14378), (2054, 9716), (2212, 9022), (2429, 8216), (2776, 7189), (4108, 4858), (4424, 4511)]