20789886

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 47029248

約数和(自身を除く): 26239362

約数列:

[1, 2, 3, 6, 13, 26, 39, 47, 53, 78, 94, 106, 107, 141, 159, 214, 282, 318, 321, 611, 642, 689, 1222, 1378, 1391, 1833, 2067, 2491, 2782, 3666, 4134, 4173, 4982, 5029, 5671, 7473, 8346, 10058, 11342, 14946, 15087, 17013, 30174, 32383, 34026, 64766, 65377, 73723, 97149, 130754, 147446, 194298, 196131, 221169, 266537, 392262, 442338, 533074, 799611, 1599222, 3464981, 6929962, 10394943, 20789886]

約数ペア:

[(1, 20789886), (2, 10394943), (3, 6929962), (6, 3464981), (13, 1599222), (26, 799611), (39, 533074), (47, 442338), (53, 392262), (78, 266537), (94, 221169), (106, 196131), (107, 194298), (141, 147446), (159, 130754), (214, 97149), (282, 73723), (318, 65377), (321, 64766), (611, 34026), (642, 32383), (689, 30174), (1222, 17013), (1378, 15087), (1391, 14946), (1833, 11342), (2067, 10058), (2491, 8346), (2782, 7473), (3666, 5671), (4134, 5029), (4173, 4982)]