20993175

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{1481}}^1$

素因数の和:1510

約数の個数: 60

約数和(自身を含む): 44471856

約数和(自身を除く): 23478681

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 315, 405, 525, 567, 675, 945, 1481, 1575, 2025, 2835, 4443, 4725, 7405, 10367, 13329, 14175, 22215, 31101, 37025, 39987, 51835, 66645, 93303, 111075, 119961, 155505, 199935, 259175, 279909, 333225, 466515, 599805, 777525, 839727, 999675, 1399545, 2332575, 2999025, 4198635, 6997725, 20993175]

約数ペア:

[(1, 20993175), (3, 6997725), (5, 4198635), (7, 2999025), (9, 2332575), (15, 1399545), (21, 999675), (25, 839727), (27, 777525), (35, 599805), (45, 466515), (63, 333225), (75, 279909), (81, 259175), (105, 199935), (135, 155505), (175, 119961), (189, 111075), (225, 93303), (315, 66645), (405, 51835), (525, 39987), (567, 37025), (675, 31101), (945, 22215), (1481, 14175), (1575, 13329), (2025, 10367), (2835, 7405), (4443, 4725)]