7947740

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 17599680

約数和(自身を除く): 9651940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 193, 284, 290, 355, 386, 580, 710, 772, 965, 1420, 1930, 2059, 3860, 4118, 5597, 8236, 10295, 11194, 13703, 20590, 22388, 27406, 27985, 41180, 54812, 55970, 68515, 111940, 137030, 274060, 397387, 794774, 1589548, 1986935, 3973870, 7947740]

約数ペア:

[(1, 7947740), (2, 3973870), (4, 1986935), (5, 1589548), (10, 794774), (20, 397387), (29, 274060), (58, 137030), (71, 111940), (116, 68515), (142, 55970), (145, 54812), (193, 41180), (284, 27985), (290, 27406), (355, 22388), (386, 20590), (580, 13703), (710, 11194), (772, 10295), (965, 8236), (1420, 5597), (1930, 4118), (2059, 3860)]