81673360

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12923}}^1$

素因数の和:13015

約数の個数: 40

約数和(自身を含む): 192309120

約数和(自身を除く): 110635760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 12923, 25846, 51692, 64615, 103384, 129230, 206768, 258460, 516920, 1020917, 1033840, 2041834, 4083668, 5104585, 8167336, 10209170, 16334672, 20418340, 40836680, 81673360]

約数ペア:

[(1, 81673360), (2, 40836680), (4, 20418340), (5, 16334672), (8, 10209170), (10, 8167336), (16, 5104585), (20, 4083668), (40, 2041834), (79, 1033840), (80, 1020917), (158, 516920), (316, 258460), (395, 206768), (632, 129230), (790, 103384), (1264, 64615), (1580, 51692), (3160, 25846), (6320, 12923)]