21710385

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 39536640

約数和(自身を除く): 17826255

約数列:

[1, 3, 5, 9, 15, 31, 45, 79, 93, 155, 197, 237, 279, 395, 465, 591, 711, 985, 1185, 1395, 1773, 2449, 2955, 3555, 6107, 7347, 8865, 12245, 15563, 18321, 22041, 30535, 36735, 46689, 54963, 77815, 91605, 110205, 140067, 233445, 274815, 482453, 700335, 1447359, 2412265, 4342077, 7236795, 21710385]

約数ペア:

[(1, 21710385), (3, 7236795), (5, 4342077), (9, 2412265), (15, 1447359), (31, 700335), (45, 482453), (79, 274815), (93, 233445), (155, 140067), (197, 110205), (237, 91605), (279, 77815), (395, 54963), (465, 46689), (591, 36735), (711, 30535), (985, 22041), (1185, 18321), (1395, 15563), (1773, 12245), (2449, 8865), (2955, 7347), (3555, 6107)]