129255340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{1999}}^1$

素因数の和:2122

約数の個数: 48

約数和(自身を含む): 281232000

約数和(自身を除く): 151976660

約数列:

[1, 2, 4, 5, 10, 20, 53, 61, 106, 122, 212, 244, 265, 305, 530, 610, 1060, 1220, 1999, 3233, 3998, 6466, 7996, 9995, 12932, 16165, 19990, 32330, 39980, 64660, 105947, 121939, 211894, 243878, 423788, 487756, 529735, 609695, 1059470, 1219390, 2118940, 2438780, 6462767, 12925534, 25851068, 32313835, 64627670, 129255340]

約数ペア:

[(1, 129255340), (2, 64627670), (4, 32313835), (5, 25851068), (10, 12925534), (20, 6462767), (53, 2438780), (61, 2118940), (106, 1219390), (122, 1059470), (212, 609695), (244, 529735), (265, 487756), (305, 423788), (530, 243878), (610, 211894), (1060, 121939), (1220, 105947), (1999, 64660), (3233, 39980), (3998, 32330), (6466, 19990), (7996, 16165), (9995, 12932)]