4205440

素因数分解:

$2^7\times 5^1\times {\mathrm{6571}}^1$

素因数の和:6590

約数の個数: 32

約数和(自身を含む): 10055160

約数和(自身を除く): 5849720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 6571, 13142, 26284, 32855, 52568, 65710, 105136, 131420, 210272, 262840, 420544, 525680, 841088, 1051360, 2102720, 4205440]

約数ペア:

[(1, 4205440), (2, 2102720), (4, 1051360), (5, 841088), (8, 525680), (10, 420544), (16, 262840), (20, 210272), (32, 131420), (40, 105136), (64, 65710), (80, 52568), (128, 32855), (160, 26284), (320, 13142), (640, 6571)]