20691076

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:161

約数の個数: 72

約数和(自身を含む): 46085760

約数和(自身を除く): 25394684

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 89, 92, 133, 161, 178, 266, 322, 356, 361, 437, 532, 623, 644, 722, 874, 1246, 1444, 1691, 1748, 2047, 2492, 2527, 3059, 3382, 4094, 5054, 6118, 6764, 8188, 8303, 10108, 11837, 12236, 14329, 16606, 23674, 28658, 32129, 33212, 38893, 47348, 57316, 58121, 64258, 77786, 116242, 128516, 155572, 224903, 232484, 272251, 449806, 544502, 738967, 899612, 1089004, 1477934, 2955868, 5172769, 10345538, 20691076]

約数ペア:

[(1, 20691076), (2, 10345538), (4, 5172769), (7, 2955868), (14, 1477934), (19, 1089004), (23, 899612), (28, 738967), (38, 544502), (46, 449806), (76, 272251), (89, 232484), (92, 224903), (133, 155572), (161, 128516), (178, 116242), (266, 77786), (322, 64258), (356, 58121), (361, 57316), (437, 47348), (532, 38893), (623, 33212), (644, 32129), (722, 28658), (874, 23674), (1246, 16606), (1444, 14329), (1691, 12236), (1748, 11837), (2047, 10108), (2492, 8303), (2527, 8188), (3059, 6764), (3382, 6118), (4094, 5054)]