20722905

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21929}}^1$

素因数の和:21950

約数の個数: 32

約数和(自身を含む): 42105600

約数和(自身を除く): 21382695

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21929, 65787, 109645, 153503, 197361, 328935, 460509, 592083, 767515, 986805, 1381527, 2302545, 2960415, 4144581, 6907635, 20722905]

約数ペア:

[(1, 20722905), (3, 6907635), (5, 4144581), (7, 2960415), (9, 2302545), (15, 1381527), (21, 986805), (27, 767515), (35, 592083), (45, 460509), (63, 328935), (105, 197361), (135, 153503), (189, 109645), (315, 65787), (945, 21929)]