18278540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{953}}^1$

素因数の和:1106

約数の個数: 48

約数和(自身を含む): 44235072

約数和(自身を除く): 25956532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 953, 959, 1370, 1906, 1918, 2740, 3812, 3836, 4765, 4795, 6671, 9530, 9590, 13342, 19060, 19180, 26684, 33355, 66710, 130561, 133420, 261122, 522244, 652805, 913927, 1305610, 1827854, 2611220, 3655708, 4569635, 9139270, 18278540]

約数ペア:

[(1, 18278540), (2, 9139270), (4, 4569635), (5, 3655708), (7, 2611220), (10, 1827854), (14, 1305610), (20, 913927), (28, 652805), (35, 522244), (70, 261122), (137, 133420), (140, 130561), (274, 66710), (548, 33355), (685, 26684), (953, 19180), (959, 19060), (1370, 13342), (1906, 9590), (1918, 9530), (2740, 6671), (3812, 4795), (3836, 4765)]