66968980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{839}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 152127360

約数和(自身を除く): 85158380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 307, 614, 839, 1228, 1535, 1678, 3070, 3356, 3991, 4195, 6140, 7982, 8390, 10907, 15964, 16780, 19955, 21814, 39910, 43628, 54535, 79820, 109070, 218140, 257573, 515146, 1030292, 1287865, 2575730, 3348449, 5151460, 6696898, 13393796, 16742245, 33484490, 66968980]

約数ペア:

[(1, 66968980), (2, 33484490), (4, 16742245), (5, 13393796), (10, 6696898), (13, 5151460), (20, 3348449), (26, 2575730), (52, 1287865), (65, 1030292), (130, 515146), (260, 257573), (307, 218140), (614, 109070), (839, 79820), (1228, 54535), (1535, 43628), (1678, 39910), (3070, 21814), (3356, 19955), (3991, 16780), (4195, 15964), (6140, 10907), (7982, 8390)]