820172015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{271}}^1\times {\mathrm{461}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 1076689152

約数和(自身を除く): 256517137

約数列:

[1, 5, 13, 65, 101, 271, 461, 505, 1313, 1355, 2305, 3523, 5993, 6565, 17615, 27371, 29965, 46561, 124931, 136855, 232805, 355823, 605293, 624655, 1624103, 1779115, 3026465, 8120515, 12618031, 63090155, 164034403, 820172015]

約数ペア:

[(1, 820172015), (5, 164034403), (13, 63090155), (65, 12618031), (101, 8120515), (271, 3026465), (461, 1779115), (505, 1624103), (1313, 624655), (1355, 605293), (2305, 355823), (3523, 232805), (5993, 136855), (6565, 124931), (17615, 46561), (27371, 29965)]