68408260

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{13309}}^1$

素因数の和:13575

約数の個数: 24

約数和(自身を含む): 144227160

約数和(自身を除く): 75818900

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 13309, 26618, 53236, 66545, 133090, 266180, 3420413, 6840826, 13681652, 17102065, 34204130, 68408260]

約数ペア:

[(1, 68408260), (2, 34204130), (4, 17102065), (5, 13681652), (10, 6840826), (20, 3420413), (257, 266180), (514, 133090), (1028, 66545), (1285, 53236), (2570, 26618), (5140, 13309)]