20719688

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 45878400

約数和(自身を除く): 25158712

約数列:

[1, 2, 4, 8, 11, 22, 23, 29, 44, 46, 58, 88, 92, 116, 184, 232, 253, 319, 353, 506, 638, 667, 706, 1012, 1276, 1334, 1412, 2024, 2552, 2668, 2824, 3883, 5336, 7337, 7766, 8119, 10237, 14674, 15532, 16238, 20474, 29348, 31064, 32476, 40948, 58696, 64952, 81896, 89309, 112607, 178618, 225214, 235451, 357236, 450428, 470902, 714472, 900856, 941804, 1883608, 2589961, 5179922, 10359844, 20719688]

約数ペア:

[(1, 20719688), (2, 10359844), (4, 5179922), (8, 2589961), (11, 1883608), (22, 941804), (23, 900856), (29, 714472), (44, 470902), (46, 450428), (58, 357236), (88, 235451), (92, 225214), (116, 178618), (184, 112607), (232, 89309), (253, 81896), (319, 64952), (353, 58696), (506, 40948), (638, 32476), (667, 31064), (706, 29348), (1012, 20474), (1276, 16238), (1334, 15532), (1412, 14674), (2024, 10237), (2552, 8119), (2668, 7766), (2824, 7337), (3883, 5336)]