11872280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{389}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 30888000

約数和(自身を除く): 19015720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 389, 436, 545, 763, 778, 872, 1090, 1526, 1556, 1945, 2180, 2723, 3052, 3112, 3815, 3890, 4360, 5446, 6104, 7630, 7780, 10892, 13615, 15260, 15560, 21784, 27230, 30520, 42401, 54460, 84802, 108920, 169604, 212005, 296807, 339208, 424010, 593614, 848020, 1187228, 1484035, 1696040, 2374456, 2968070, 5936140, 11872280]

約数ペア:

[(1, 11872280), (2, 5936140), (4, 2968070), (5, 2374456), (7, 1696040), (8, 1484035), (10, 1187228), (14, 848020), (20, 593614), (28, 424010), (35, 339208), (40, 296807), (56, 212005), (70, 169604), (109, 108920), (140, 84802), (218, 54460), (280, 42401), (389, 30520), (436, 27230), (545, 21784), (763, 15560), (778, 15260), (872, 13615), (1090, 10892), (1526, 7780), (1556, 7630), (1945, 6104), (2180, 5446), (2723, 4360), (3052, 3890), (3112, 3815)]