20382687

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 34201440

約数和(自身を除く): 13818753

約数列:

[1, 3, 9, 13, 19, 39, 53, 57, 117, 159, 171, 173, 247, 477, 519, 689, 741, 1007, 1557, 2067, 2223, 2249, 3021, 3287, 6201, 6747, 9063, 9169, 9861, 13091, 20241, 27507, 29583, 39273, 42731, 82521, 117819, 119197, 128193, 174211, 357591, 384579, 522633, 1072773, 1567899, 2264743, 6794229, 20382687]

約数ペア:

[(1, 20382687), (3, 6794229), (9, 2264743), (13, 1567899), (19, 1072773), (39, 522633), (53, 384579), (57, 357591), (117, 174211), (159, 128193), (171, 119197), (173, 117819), (247, 82521), (477, 42731), (519, 39273), (689, 29583), (741, 27507), (1007, 20241), (1557, 13091), (2067, 9861), (2223, 9169), (2249, 9063), (3021, 6747), (3287, 6201)]