2154460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1399}}^1$

素因数の和:1426

約数の個数: 48

約数和(自身を含む): 5644800

約数和(自身を除く): 3490340

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1399, 1540, 2798, 5596, 6995, 9793, 13990, 15389, 19586, 27980, 30778, 39172, 48965, 61556, 76945, 97930, 107723, 153890, 195860, 215446, 307780, 430892, 538615, 1077230, 2154460]

約数ペア:

[(1, 2154460), (2, 1077230), (4, 538615), (5, 430892), (7, 307780), (10, 215446), (11, 195860), (14, 153890), (20, 107723), (22, 97930), (28, 76945), (35, 61556), (44, 48965), (55, 39172), (70, 30778), (77, 27980), (110, 19586), (140, 15389), (154, 13990), (220, 9793), (308, 6995), (385, 5596), (770, 2798), (1399, 1540)]