21082240

素因数分解:

$2^7\times 5^1\times {\mathrm{32941}}^1$

素因数の和:32960

約数の個数: 32

約数和(自身を含む): 50401260

約数和(自身を除く): 29319020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32941, 65882, 131764, 164705, 263528, 329410, 527056, 658820, 1054112, 1317640, 2108224, 2635280, 4216448, 5270560, 10541120, 21082240]

約数ペア:

[(1, 21082240), (2, 10541120), (4, 5270560), (5, 4216448), (8, 2635280), (10, 2108224), (16, 1317640), (20, 1054112), (32, 658820), (40, 527056), (64, 329410), (80, 263528), (128, 164705), (160, 131764), (320, 65882), (640, 32941)]