20361825

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{433}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 41976480

約数和(自身を除く): 21614655

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 209, 225, 275, 285, 433, 475, 495, 627, 825, 855, 1045, 1299, 1425, 1881, 2165, 2475, 3135, 3897, 4275, 4763, 5225, 6495, 8227, 9405, 10825, 14289, 15675, 19485, 23815, 24681, 32475, 41135, 42867, 47025, 71445, 74043, 90497, 97425, 119075, 123405, 205675, 214335, 271491, 357225, 370215, 452485, 617025, 814473, 1071675, 1357455, 1851075, 2262425, 4072365, 6787275, 20361825]

約数ペア:

[(1, 20361825), (3, 6787275), (5, 4072365), (9, 2262425), (11, 1851075), (15, 1357455), (19, 1071675), (25, 814473), (33, 617025), (45, 452485), (55, 370215), (57, 357225), (75, 271491), (95, 214335), (99, 205675), (165, 123405), (171, 119075), (209, 97425), (225, 90497), (275, 74043), (285, 71445), (433, 47025), (475, 42867), (495, 41135), (627, 32475), (825, 24681), (855, 23815), (1045, 19485), (1299, 15675), (1425, 14289), (1881, 10825), (2165, 9405), (2475, 8227), (3135, 6495), (3897, 5225), (4275, 4763)]