280120900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3109}}^1$

素因数の和:3193

約数の個数: 72

約数和(自身を含む): 655973640

約数和(自身を除く): 375852740

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 53, 68, 85, 100, 106, 170, 212, 265, 340, 425, 530, 850, 901, 1060, 1325, 1700, 1802, 2650, 3109, 3604, 4505, 5300, 6218, 9010, 12436, 15545, 18020, 22525, 31090, 45050, 52853, 62180, 77725, 90100, 105706, 155450, 164777, 211412, 264265, 310900, 329554, 528530, 659108, 823885, 1057060, 1321325, 1647770, 2642650, 2801209, 3295540, 4119425, 5285300, 5602418, 8238850, 11204836, 14006045, 16477700, 28012090, 56024180, 70030225, 140060450, 280120900]

約数ペア:

[(1, 280120900), (2, 140060450), (4, 70030225), (5, 56024180), (10, 28012090), (17, 16477700), (20, 14006045), (25, 11204836), (34, 8238850), (50, 5602418), (53, 5285300), (68, 4119425), (85, 3295540), (100, 2801209), (106, 2642650), (170, 1647770), (212, 1321325), (265, 1057060), (340, 823885), (425, 659108), (530, 528530), (850, 329554), (901, 310900), (1060, 264265), (1325, 211412), (1700, 164777), (1802, 155450), (2650, 105706), (3109, 90100), (3604, 77725), (4505, 62180), (5300, 52853), (6218, 45050), (9010, 31090), (12436, 22525), (15545, 18020)]