18317440

素因数分解:

$2^7\times 5^1\times {\mathrm{28621}}^1$

素因数の和:28640

約数の個数: 32

約数和(自身を含む): 43791660

約数和(自身を除く): 25474220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 28621, 57242, 114484, 143105, 228968, 286210, 457936, 572420, 915872, 1144840, 1831744, 2289680, 3663488, 4579360, 9158720, 18317440]

約数ペア:

[(1, 18317440), (2, 9158720), (4, 4579360), (5, 3663488), (8, 2289680), (10, 1831744), (16, 1144840), (20, 915872), (32, 572420), (40, 457936), (64, 286210), (80, 228968), (128, 143105), (160, 114484), (320, 57242), (640, 28621)]