20218864

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 40457232

約数和(自身を除く): 20238368

約数列:

[1, 2, 4, 8, 16, 53, 106, 113, 211, 212, 226, 422, 424, 452, 844, 848, 904, 1688, 1808, 3376, 5989, 11183, 11978, 22366, 23843, 23956, 44732, 47686, 47912, 89464, 95372, 95824, 178928, 190744, 381488, 1263679, 2527358, 5054716, 10109432, 20218864]

約数ペア:

[(1, 20218864), (2, 10109432), (4, 5054716), (8, 2527358), (16, 1263679), (53, 381488), (106, 190744), (113, 178928), (211, 95824), (212, 95372), (226, 89464), (422, 47912), (424, 47686), (452, 44732), (844, 23956), (848, 23843), (904, 22366), (1688, 11978), (1808, 11183), (3376, 5989)]