20111025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1283}}^1$

素因数の和:1326

約数の個数: 48

約数和(自身を含む): 38211840

約数和(自身を除く): 18100815

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1283, 1425, 3135, 3849, 5225, 6415, 14113, 15675, 19245, 24377, 32075, 42339, 70565, 73131, 96225, 121885, 211695, 268147, 352825, 365655, 609425, 804441, 1058475, 1340735, 1828275, 4022205, 6703675, 20111025]

約数ペア:

[(1, 20111025), (3, 6703675), (5, 4022205), (11, 1828275), (15, 1340735), (19, 1058475), (25, 804441), (33, 609425), (55, 365655), (57, 352825), (75, 268147), (95, 211695), (165, 121885), (209, 96225), (275, 73131), (285, 70565), (475, 42339), (627, 32075), (825, 24377), (1045, 19245), (1283, 15675), (1425, 14113), (3135, 6415), (3849, 5225)]