18780710

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1979}}^1$

素因数の和:2072

約数の個数: 32

約数和(自身を含む): 36923040

約数和(自身を除く): 18142330

約数列:

[1, 2, 5, 10, 13, 26, 65, 73, 130, 146, 365, 730, 949, 1898, 1979, 3958, 4745, 9490, 9895, 19790, 25727, 51454, 128635, 144467, 257270, 288934, 722335, 1444670, 1878071, 3756142, 9390355, 18780710]

約数ペア:

[(1, 18780710), (2, 9390355), (5, 3756142), (10, 1878071), (13, 1444670), (26, 722335), (65, 288934), (73, 257270), (130, 144467), (146, 128635), (365, 51454), (730, 25727), (949, 19790), (1898, 9895), (1979, 9490), (3958, 4745)]