31990413

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 56996352

約数和(自身を除く): 25005939

約数列:

[1, 3, 7, 13, 17, 21, 39, 51, 61, 91, 113, 119, 183, 221, 273, 339, 357, 427, 663, 791, 793, 1037, 1281, 1469, 1547, 1921, 2373, 2379, 3111, 4407, 4641, 5551, 5763, 6893, 7259, 10283, 13447, 13481, 16653, 20679, 21777, 24973, 30849, 40341, 40443, 48251, 74919, 89609, 94367, 117181, 144753, 174811, 268827, 283101, 351543, 524433, 627263, 820267, 1523353, 1881789, 2460801, 4570059, 10663471, 31990413]

約数ペア:

[(1, 31990413), (3, 10663471), (7, 4570059), (13, 2460801), (17, 1881789), (21, 1523353), (39, 820267), (51, 627263), (61, 524433), (91, 351543), (113, 283101), (119, 268827), (183, 174811), (221, 144753), (273, 117181), (339, 94367), (357, 89609), (427, 74919), (663, 48251), (791, 40443), (793, 40341), (1037, 30849), (1281, 24973), (1469, 21777), (1547, 20679), (1921, 16653), (2373, 13481), (2379, 13447), (3111, 10283), (4407, 7259), (4641, 6893), (5551, 5763)]