211718720

素因数分解:

$2^6\times 5^1\times {\mathrm{661621}}^1$

素因数の和:661638

約数の個数: 28

約数和(自身を含む): 504155964

約数和(自身を除く): 292437244

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 661621, 1323242, 2646484, 3308105, 5292968, 6616210, 10585936, 13232420, 21171872, 26464840, 42343744, 52929680, 105859360, 211718720]

約数ペア:

[(1, 211718720), (2, 105859360), (4, 52929680), (5, 42343744), (8, 26464840), (10, 21171872), (16, 13232420), (20, 10585936), (32, 6616210), (40, 5292968), (64, 3308105), (80, 2646484), (160, 1323242), (320, 661621)]