20545486

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:145

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 17774642

約数列:

[1, 2, 13, 17, 23, 26, 34, 43, 46, 47, 86, 94, 221, 299, 391, 442, 559, 598, 611, 731, 782, 799, 989, 1081, 1118, 1222, 1462, 1598, 1978, 2021, 2162, 4042, 5083, 9503, 10166, 10387, 12857, 14053, 16813, 18377, 19006, 20774, 25714, 26273, 28106, 33626, 34357, 36754, 46483, 52546, 68714, 92966, 218569, 238901, 437138, 446641, 477802, 604279, 790211, 893282, 1208558, 1580422, 10272743, 20545486]

約数ペア:

[(1, 20545486), (2, 10272743), (13, 1580422), (17, 1208558), (23, 893282), (26, 790211), (34, 604279), (43, 477802), (46, 446641), (47, 437138), (86, 238901), (94, 218569), (221, 92966), (299, 68714), (391, 52546), (442, 46483), (559, 36754), (598, 34357), (611, 33626), (731, 28106), (782, 26273), (799, 25714), (989, 20774), (1081, 19006), (1118, 18377), (1222, 16813), (1462, 14053), (1598, 12857), (1978, 10387), (2021, 10166), (2162, 9503), (4042, 5083)]