21947860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1489}}^1$

素因数の和:1576

約数の個数: 48

約数和(自身を含む): 51065280

約数和(自身を除く): 29117420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 67, 110, 134, 220, 268, 335, 670, 737, 1340, 1474, 1489, 2948, 2978, 3685, 5956, 7370, 7445, 14740, 14890, 16379, 29780, 32758, 65516, 81895, 99763, 163790, 199526, 327580, 399052, 498815, 997630, 1097393, 1995260, 2194786, 4389572, 5486965, 10973930, 21947860]

約数ペア:

[(1, 21947860), (2, 10973930), (4, 5486965), (5, 4389572), (10, 2194786), (11, 1995260), (20, 1097393), (22, 997630), (44, 498815), (55, 399052), (67, 327580), (110, 199526), (134, 163790), (220, 99763), (268, 81895), (335, 65516), (670, 32758), (737, 29780), (1340, 16379), (1474, 14890), (1489, 14740), (2948, 7445), (2978, 7370), (3685, 5956)]