78797440

素因数分解:

$2^7\times 5^1\times {\mathrm{123121}}^1$

素因数の和:123140

約数の個数: 32

約数和(自身を含む): 188376660

約数和(自身を除く): 109579220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 123121, 246242, 492484, 615605, 984968, 1231210, 1969936, 2462420, 3939872, 4924840, 7879744, 9849680, 15759488, 19699360, 39398720, 78797440]

約数ペア:

[(1, 78797440), (2, 39398720), (4, 19699360), (5, 15759488), (8, 9849680), (10, 7879744), (16, 4924840), (20, 3939872), (32, 2462420), (40, 1969936), (64, 1231210), (80, 984968), (128, 615605), (160, 492484), (320, 246242), (640, 123121)]