20863425

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^4\times {\mathrm{19}}^1$

素因数の和:76

約数の個数: 60

約数和(自身を含む): 39940400

約数和(自身を除く): 19076975

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 121, 165, 209, 275, 285, 363, 475, 605, 627, 825, 1045, 1331, 1425, 1815, 2299, 3025, 3135, 3993, 5225, 6655, 6897, 9075, 11495, 14641, 15675, 19965, 25289, 33275, 34485, 43923, 57475, 73205, 75867, 99825, 126445, 172425, 219615, 278179, 366025, 379335, 632225, 834537, 1098075, 1390895, 1896675, 4172685, 6954475, 20863425]

約数ペア:

[(1, 20863425), (3, 6954475), (5, 4172685), (11, 1896675), (15, 1390895), (19, 1098075), (25, 834537), (33, 632225), (55, 379335), (57, 366025), (75, 278179), (95, 219615), (121, 172425), (165, 126445), (209, 99825), (275, 75867), (285, 73205), (363, 57475), (475, 43923), (605, 34485), (627, 33275), (825, 25289), (1045, 19965), (1331, 15675), (1425, 14641), (1815, 11495), (2299, 9075), (3025, 6897), (3135, 6655), (3993, 5225)]