27920120

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2208

約数の個数: 64

約数和(自身を含む): 70048800

約数和(自身を除く): 42128680

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, 680, 760, 1292, 1615, 2161, 2584, 3230, 4322, 6460, 8644, 10805, 12920, 17288, 21610, 36737, 41059, 43220, 73474, 82118, 86440, 146948, 164236, 183685, 205295, 293896, 328472, 367370, 410590, 698003, 734740, 821180, 1396006, 1469480, 1642360, 2792012, 3490015, 5584024, 6980030, 13960060, 27920120]

約数ペア:

[(1, 27920120), (2, 13960060), (4, 6980030), (5, 5584024), (8, 3490015), (10, 2792012), (17, 1642360), (19, 1469480), (20, 1396006), (34, 821180), (38, 734740), (40, 698003), (68, 410590), (76, 367370), (85, 328472), (95, 293896), (136, 205295), (152, 183685), (170, 164236), (190, 146948), (323, 86440), (340, 82118), (380, 73474), (646, 43220), (680, 41059), (760, 36737), (1292, 21610), (1615, 17288), (2161, 12920), (2584, 10805), (3230, 8644), (4322, 6460)]