81387716

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{281}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 156024960

約数和(自身を除く): 74637244

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 103, 148, 206, 281, 412, 562, 703, 1124, 1406, 1957, 2812, 3811, 3914, 5339, 7622, 7828, 10397, 10678, 15244, 20794, 21356, 28943, 41588, 57886, 72409, 115772, 144818, 197543, 289636, 395086, 549917, 790172, 1070891, 1099834, 2141782, 2199668, 4283564, 20346929, 40693858, 81387716]

約数ペア:

[(1, 81387716), (2, 40693858), (4, 20346929), (19, 4283564), (37, 2199668), (38, 2141782), (74, 1099834), (76, 1070891), (103, 790172), (148, 549917), (206, 395086), (281, 289636), (412, 197543), (562, 144818), (703, 115772), (1124, 72409), (1406, 57886), (1957, 41588), (2812, 28943), (3811, 21356), (3914, 20794), (5339, 15244), (7622, 10678), (7828, 10397)]