1280453720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{351773}}^1$

素因数の和:351804

約数の個数: 64

約数和(自身を含む): 3545881920

約数和(自身を除く): 2265428200

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 351773, 703546, 1407092, 1758865, 2462411, 2814184, 3517730, 4573049, 4924822, 7035460, 9146098, 9849644, 12312055, 14070920, 18292196, 19699288, 22865245, 24624110, 32011343, 36584392, 45730490, 49248220, 64022686, 91460980, 98496440, 128045372, 160056715, 182921960, 256090744, 320113430, 640226860, 1280453720]

約数ペア:

[(1, 1280453720), (2, 640226860), (4, 320113430), (5, 256090744), (7, 182921960), (8, 160056715), (10, 128045372), (13, 98496440), (14, 91460980), (20, 64022686), (26, 49248220), (28, 45730490), (35, 36584392), (40, 32011343), (52, 24624110), (56, 22865245), (65, 19699288), (70, 18292196), (91, 14070920), (104, 12312055), (130, 9849644), (140, 9146098), (182, 7035460), (260, 4924822), (280, 4573049), (364, 3517730), (455, 2814184), (520, 2462411), (728, 1758865), (910, 1407092), (1820, 703546), (3640, 351773)]