19987682

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4111}}^1$

素因数の和:4154

約数の個数: 32

約数和(自身を含む): 37304064

約数和(自身を除く): 17316382

約数列:

[1, 2, 11, 13, 17, 22, 26, 34, 143, 187, 221, 286, 374, 442, 2431, 4111, 4862, 8222, 45221, 53443, 69887, 90442, 106886, 139774, 587873, 768757, 908531, 1175746, 1537514, 1817062, 9993841, 19987682]

約数ペア:

[(1, 19987682), (2, 9993841), (11, 1817062), (13, 1537514), (17, 1175746), (22, 908531), (26, 768757), (34, 587873), (143, 139774), (187, 106886), (221, 90442), (286, 69887), (374, 53443), (442, 45221), (2431, 8222), (4111, 4862)]