8540120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{661}}^1$

素因数の和:708

約数の個数: 64

約数和(自身を含む): 21448800

約数和(自身を除く): 12908680

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 661, 680, 760, 1292, 1322, 1615, 2584, 2644, 3230, 3305, 5288, 6460, 6610, 11237, 12559, 12920, 13220, 22474, 25118, 26440, 44948, 50236, 56185, 62795, 89896, 100472, 112370, 125590, 213503, 224740, 251180, 427006, 449480, 502360, 854012, 1067515, 1708024, 2135030, 4270060, 8540120]

約数ペア:

[(1, 8540120), (2, 4270060), (4, 2135030), (5, 1708024), (8, 1067515), (10, 854012), (17, 502360), (19, 449480), (20, 427006), (34, 251180), (38, 224740), (40, 213503), (68, 125590), (76, 112370), (85, 100472), (95, 89896), (136, 62795), (152, 56185), (170, 50236), (190, 44948), (323, 26440), (340, 25118), (380, 22474), (646, 13220), (661, 12920), (680, 12559), (760, 11237), (1292, 6610), (1322, 6460), (1615, 5288), (2584, 3305), (2644, 3230)]