19735540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{823}}^1$

素因数の和:952

約数の個数: 48

約数和(自身を含む): 45682560

約数和(自身を除く): 25947020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 109, 110, 218, 220, 436, 545, 823, 1090, 1199, 1646, 2180, 2398, 3292, 4115, 4796, 5995, 8230, 9053, 11990, 16460, 18106, 23980, 36212, 45265, 89707, 90530, 179414, 181060, 358828, 448535, 897070, 986777, 1794140, 1973554, 3947108, 4933885, 9867770, 19735540]

約数ペア:

[(1, 19735540), (2, 9867770), (4, 4933885), (5, 3947108), (10, 1973554), (11, 1794140), (20, 986777), (22, 897070), (44, 448535), (55, 358828), (109, 181060), (110, 179414), (218, 90530), (220, 89707), (436, 45265), (545, 36212), (823, 23980), (1090, 18106), (1199, 16460), (1646, 11990), (2180, 9053), (2398, 8230), (3292, 5995), (4115, 4796)]