20469872

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{239}}^1$

素因数の和:401

約数の個数: 40

約数和(自身を含む): 40979520

約数和(自身を除く): 20509648

約数列:

[1, 2, 4, 8, 16, 53, 101, 106, 202, 212, 239, 404, 424, 478, 808, 848, 956, 1616, 1912, 3824, 5353, 10706, 12667, 21412, 24139, 25334, 42824, 48278, 50668, 85648, 96556, 101336, 193112, 202672, 386224, 1279367, 2558734, 5117468, 10234936, 20469872]

約数ペア:

[(1, 20469872), (2, 10234936), (4, 5117468), (8, 2558734), (16, 1279367), (53, 386224), (101, 202672), (106, 193112), (202, 101336), (212, 96556), (239, 85648), (404, 50668), (424, 48278), (478, 42824), (808, 25334), (848, 24139), (956, 21412), (1616, 12667), (1912, 10706), (3824, 5353)]