7990060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 18345600

約数和(自身を除く): 10355540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 389, 395, 778, 790, 1027, 1556, 1580, 1945, 2054, 3890, 4108, 5057, 5135, 7780, 10114, 10270, 20228, 20540, 25285, 30731, 50570, 61462, 101140, 122924, 153655, 307310, 399503, 614620, 799006, 1598012, 1997515, 3995030, 7990060]

約数ペア:

[(1, 7990060), (2, 3995030), (4, 1997515), (5, 1598012), (10, 799006), (13, 614620), (20, 399503), (26, 307310), (52, 153655), (65, 122924), (79, 101140), (130, 61462), (158, 50570), (260, 30731), (316, 25285), (389, 20540), (395, 20228), (778, 10270), (790, 10114), (1027, 7780), (1556, 5135), (1580, 5057), (1945, 4108), (2054, 3890)]