19987275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3461}}^1$

素因数の和:3492

約数の個数: 48

約数和(自身を含む): 41211648

約数和(自身を除く): 21224373

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 165, 175, 231, 275, 385, 525, 825, 1155, 1925, 3461, 5775, 10383, 17305, 24227, 38071, 51915, 72681, 86525, 114213, 121135, 190355, 259575, 266497, 363405, 571065, 605675, 799491, 951775, 1332485, 1817025, 2855325, 3997455, 6662425, 19987275]

約数ペア:

[(1, 19987275), (3, 6662425), (5, 3997455), (7, 2855325), (11, 1817025), (15, 1332485), (21, 951775), (25, 799491), (33, 605675), (35, 571065), (55, 363405), (75, 266497), (77, 259575), (105, 190355), (165, 121135), (175, 114213), (231, 86525), (275, 72681), (385, 51915), (525, 38071), (825, 24227), (1155, 17305), (1925, 10383), (3461, 5775)]