20744815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{359}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 10220945

約数列:

[1, 5, 7, 13, 35, 65, 91, 127, 359, 455, 635, 889, 1651, 1795, 2513, 4445, 4667, 8255, 11557, 12565, 23335, 32669, 45593, 57785, 163345, 227965, 319151, 592709, 1595755, 2963545, 4148963, 20744815]

約数ペア:

[(1, 20744815), (5, 4148963), (7, 2963545), (13, 1595755), (35, 592709), (65, 319151), (91, 227965), (127, 163345), (359, 57785), (455, 45593), (635, 32669), (889, 23335), (1651, 12565), (1795, 11557), (2513, 8255), (4445, 4667)]