20706490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1151}}^1$

素因数の和:1422

約数の個数: 32

約数和(自身を含む): 42799104

約数和(自身を除く): 22092614

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1151, 1285, 1799, 2302, 2570, 3598, 5755, 8057, 8995, 11510, 16114, 17990, 40285, 80570, 295807, 591614, 1479035, 2070649, 2958070, 4141298, 10353245, 20706490]

約数ペア:

[(1, 20706490), (2, 10353245), (5, 4141298), (7, 2958070), (10, 2070649), (14, 1479035), (35, 591614), (70, 295807), (257, 80570), (514, 40285), (1151, 17990), (1285, 16114), (1799, 11510), (2302, 8995), (2570, 8057), (3598, 5755)]