68664280

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{25621}}^1$

素因数の和:25699

約数の個数: 32

約数和(自身を含む): 156806640

約数和(自身を除く): 88142360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 25621, 51242, 102484, 128105, 204968, 256210, 512420, 1024840, 1716607, 3433214, 6866428, 8583035, 13732856, 17166070, 34332140, 68664280]

約数ペア:

[(1, 68664280), (2, 34332140), (4, 17166070), (5, 13732856), (8, 8583035), (10, 6866428), (20, 3433214), (40, 1716607), (67, 1024840), (134, 512420), (268, 256210), (335, 204968), (536, 128105), (670, 102484), (1340, 51242), (2680, 25621)]