21257652

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3169}}^1$

素因数の和:3232

約数の個数: 48

約数和(自身を含む): 54676160

約数和(自身を除く): 33418508

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 43, 52, 78, 86, 129, 156, 172, 258, 516, 559, 1118, 1677, 2236, 3169, 3354, 6338, 6708, 9507, 12676, 19014, 38028, 41197, 82394, 123591, 136267, 164788, 247182, 272534, 408801, 494364, 545068, 817602, 1635204, 1771471, 3542942, 5314413, 7085884, 10628826, 21257652]

約数ペア:

[(1, 21257652), (2, 10628826), (3, 7085884), (4, 5314413), (6, 3542942), (12, 1771471), (13, 1635204), (26, 817602), (39, 545068), (43, 494364), (52, 408801), (78, 272534), (86, 247182), (129, 164788), (156, 136267), (172, 123591), (258, 82394), (516, 41197), (559, 38028), (1118, 19014), (1677, 12676), (2236, 9507), (3169, 6708), (3354, 6338)]