81720345

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{3911}}^1$

素因数の和:4125

約数の個数: 32

約数和(自身を含む): 150220800

約数和(自身を除く): 68500455

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 199, 597, 995, 1393, 2985, 3911, 4179, 6965, 11733, 19555, 20895, 27377, 58665, 82131, 136885, 410655, 778289, 2334867, 3891445, 5448023, 11674335, 16344069, 27240115, 81720345]

約数ペア:

[(1, 81720345), (3, 27240115), (5, 16344069), (7, 11674335), (15, 5448023), (21, 3891445), (35, 2334867), (105, 778289), (199, 410655), (597, 136885), (995, 82131), (1393, 58665), (2985, 27377), (3911, 20895), (4179, 19555), (6965, 11733)]