81643315

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 109368000

約数和(自身を除く): 27724685

約数列:

[1, 5, 13, 59, 61, 65, 295, 305, 349, 767, 793, 1745, 3599, 3835, 3965, 4537, 17995, 20591, 21289, 22685, 46787, 102955, 106445, 233935, 267683, 276757, 1256051, 1338415, 1383785, 6280255, 16328663, 81643315]

約数ペア:

[(1, 81643315), (5, 16328663), (13, 6280255), (59, 1383785), (61, 1338415), (65, 1256051), (295, 276757), (305, 267683), (349, 233935), (767, 106445), (793, 102955), (1745, 46787), (3599, 22685), (3835, 21289), (3965, 20591), (4537, 17995)]