20852349

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:665

約数の個数: 32

約数和(自身を含む): 33386496

約数和(自身を除く): 12534147

約数列:

[1, 3, 7, 21, 37, 47, 111, 141, 259, 329, 571, 777, 987, 1713, 1739, 3997, 5217, 11991, 12173, 21127, 26837, 36519, 63381, 80511, 147889, 187859, 443667, 563577, 992969, 2978907, 6950783, 20852349]

約数ペア:

[(1, 20852349), (3, 6950783), (7, 2978907), (21, 992969), (37, 563577), (47, 443667), (111, 187859), (141, 147889), (259, 80511), (329, 63381), (571, 36519), (777, 26837), (987, 21127), (1713, 12173), (1739, 11991), (3997, 5217)]