21302768

素因数分解:

$2^4\times {\mathrm{17}}^3\times {\mathrm{271}}^1$

素因数の和:330

約数の個数: 40

約数和(自身を含む): 44015040

約数和(自身を除く): 22712272

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 271, 272, 289, 542, 578, 1084, 1156, 2168, 2312, 4336, 4607, 4624, 4913, 9214, 9826, 18428, 19652, 36856, 39304, 73712, 78319, 78608, 156638, 313276, 626552, 1253104, 1331423, 2662846, 5325692, 10651384, 21302768]

約数ペア:

[(1, 21302768), (2, 10651384), (4, 5325692), (8, 2662846), (16, 1331423), (17, 1253104), (34, 626552), (68, 313276), (136, 156638), (271, 78608), (272, 78319), (289, 73712), (542, 39304), (578, 36856), (1084, 19652), (1156, 18428), (2168, 9826), (2312, 9214), (4336, 4913), (4607, 4624)]