20573540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1493}}^1$

素因数の和:1568

約数の個数: 48

約数和(自身を含む): 47437488

約数和(自身を除く): 26863948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1378, 1493, 2756, 2986, 3445, 5972, 6890, 7465, 13780, 14930, 19409, 29860, 38818, 77636, 79129, 97045, 158258, 194090, 316516, 388180, 395645, 791290, 1028677, 1582580, 2057354, 4114708, 5143385, 10286770, 20573540]

約数ペア:

[(1, 20573540), (2, 10286770), (4, 5143385), (5, 4114708), (10, 2057354), (13, 1582580), (20, 1028677), (26, 791290), (52, 395645), (53, 388180), (65, 316516), (106, 194090), (130, 158258), (212, 97045), (260, 79129), (265, 77636), (530, 38818), (689, 29860), (1060, 19409), (1378, 14930), (1493, 13780), (2756, 7465), (2986, 6890), (3445, 5972)]