31221680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{439}}^1$

素因数の和:586

約数の個数: 80

約数和(自身を含む): 83804160

約数和(自身を除く): 52582480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 439, 508, 560, 635, 878, 889, 1016, 1270, 1756, 1778, 2032, 2195, 2540, 3073, 3512, 3556, 4390, 4445, 5080, 6146, 7024, 7112, 8780, 8890, 10160, 12292, 14224, 15365, 17560, 17780, 24584, 30730, 35120, 35560, 49168, 55753, 61460, 71120, 111506, 122920, 223012, 245840, 278765, 390271, 446024, 557530, 780542, 892048, 1115060, 1561084, 1951355, 2230120, 3122168, 3902710, 4460240, 6244336, 7805420, 15610840, 31221680]

約数ペア:

[(1, 31221680), (2, 15610840), (4, 7805420), (5, 6244336), (7, 4460240), (8, 3902710), (10, 3122168), (14, 2230120), (16, 1951355), (20, 1561084), (28, 1115060), (35, 892048), (40, 780542), (56, 557530), (70, 446024), (80, 390271), (112, 278765), (127, 245840), (140, 223012), (254, 122920), (280, 111506), (439, 71120), (508, 61460), (560, 55753), (635, 49168), (878, 35560), (889, 35120), (1016, 30730), (1270, 24584), (1756, 17780), (1778, 17560), (2032, 15365), (2195, 14224), (2540, 12292), (3073, 10160), (3512, 8890), (3556, 8780), (4390, 7112), (4445, 7024), (5080, 6146)]