1289540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 3166464

約数和(自身を除く): 1876924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 151, 244, 302, 305, 427, 604, 610, 755, 854, 1057, 1220, 1510, 1708, 2114, 2135, 3020, 4228, 4270, 5285, 8540, 9211, 10570, 18422, 21140, 36844, 46055, 64477, 92110, 128954, 184220, 257908, 322385, 644770, 1289540]

約数ペア:

[(1, 1289540), (2, 644770), (4, 322385), (5, 257908), (7, 184220), (10, 128954), (14, 92110), (20, 64477), (28, 46055), (35, 36844), (61, 21140), (70, 18422), (122, 10570), (140, 9211), (151, 8540), (244, 5285), (302, 4270), (305, 4228), (427, 3020), (604, 2135), (610, 2114), (755, 1708), (854, 1510), (1057, 1220)]