18488540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3221}}^1$

素因数の和:3278

約数の個数: 48

約数和(自身を含む): 45468864

約数和(自身を除く): 26980324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3221, 5740, 6442, 12884, 16105, 22547, 32210, 45094, 64420, 90188, 112735, 132061, 225470, 264122, 450940, 528244, 660305, 924427, 1320610, 1848854, 2641220, 3697708, 4622135, 9244270, 18488540]

約数ペア:

[(1, 18488540), (2, 9244270), (4, 4622135), (5, 3697708), (7, 2641220), (10, 1848854), (14, 1320610), (20, 924427), (28, 660305), (35, 528244), (41, 450940), (70, 264122), (82, 225470), (140, 132061), (164, 112735), (205, 90188), (287, 64420), (410, 45094), (574, 32210), (820, 22547), (1148, 16105), (1435, 12884), (2870, 6442), (3221, 5740)]