20611605

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{967}}^1$

素因数の和:1018

約数の個数: 48

約数和(自身を含む): 39726720

約数和(自身を除く): 19115115

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 49, 87, 105, 145, 147, 203, 245, 435, 609, 735, 967, 1015, 1421, 2901, 3045, 4263, 4835, 6769, 7105, 14505, 20307, 21315, 28043, 33845, 47383, 84129, 101535, 140215, 142149, 196301, 236915, 420645, 588903, 710745, 981505, 1374107, 2944515, 4122321, 6870535, 20611605]

約数ペア:

[(1, 20611605), (3, 6870535), (5, 4122321), (7, 2944515), (15, 1374107), (21, 981505), (29, 710745), (35, 588903), (49, 420645), (87, 236915), (105, 196301), (145, 142149), (147, 140215), (203, 101535), (245, 84129), (435, 47383), (609, 33845), (735, 28043), (967, 21315), (1015, 20307), (1421, 14505), (2901, 7105), (3045, 6769), (4263, 4835)]