21403564

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{463}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 46563328

約数和(自身を除く): 25159764

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 127, 182, 254, 364, 463, 508, 889, 926, 1651, 1778, 1852, 3241, 3302, 3556, 6019, 6482, 6604, 11557, 12038, 12964, 23114, 24076, 42133, 46228, 58801, 84266, 117602, 168532, 235204, 411607, 764413, 823214, 1528826, 1646428, 3057652, 5350891, 10701782, 21403564]

約数ペア:

[(1, 21403564), (2, 10701782), (4, 5350891), (7, 3057652), (13, 1646428), (14, 1528826), (26, 823214), (28, 764413), (52, 411607), (91, 235204), (127, 168532), (182, 117602), (254, 84266), (364, 58801), (463, 46228), (508, 42133), (889, 24076), (926, 23114), (1651, 12964), (1778, 12038), (1852, 11557), (3241, 6604), (3302, 6482), (3556, 6019)]