21450555

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{22699}}^1$

素因数の和:22720

約数の個数: 32

約数和(自身を含む): 43584000

約数和(自身を除く): 22133445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 22699, 68097, 113495, 158893, 204291, 340485, 476679, 612873, 794465, 1021455, 1430037, 2383395, 3064365, 4290111, 7150185, 21450555]

約数ペア:

[(1, 21450555), (3, 7150185), (5, 4290111), (7, 3064365), (9, 2383395), (15, 1430037), (21, 1021455), (27, 794465), (35, 612873), (45, 476679), (63, 340485), (105, 204291), (135, 158893), (189, 113495), (315, 68097), (945, 22699)]