78880004

素因数分解:

$2^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:277

約数の個数: 72

約数和(自身を含む): 168298200

約数和(自身を除く): 89418196

約数列:

[1, 2, 4, 7, 14, 28, 37, 49, 73, 74, 98, 146, 148, 149, 196, 259, 292, 298, 511, 518, 596, 1022, 1036, 1043, 1813, 2044, 2086, 2701, 3577, 3626, 4172, 5402, 5513, 7154, 7252, 7301, 10804, 10877, 11026, 14308, 14602, 18907, 21754, 22052, 29204, 37814, 38591, 43508, 75628, 76139, 77182, 132349, 152278, 154364, 264698, 270137, 304556, 402449, 529396, 532973, 540274, 804898, 1065946, 1080548, 1609796, 2131892, 2817143, 5634286, 11268572, 19720001, 39440002, 78880004]

約数ペア:

[(1, 78880004), (2, 39440002), (4, 19720001), (7, 11268572), (14, 5634286), (28, 2817143), (37, 2131892), (49, 1609796), (73, 1080548), (74, 1065946), (98, 804898), (146, 540274), (148, 532973), (149, 529396), (196, 402449), (259, 304556), (292, 270137), (298, 264698), (511, 154364), (518, 152278), (596, 132349), (1022, 77182), (1036, 76139), (1043, 75628), (1813, 43508), (2044, 38591), (2086, 37814), (2701, 29204), (3577, 22052), (3626, 21754), (4172, 18907), (5402, 14602), (5513, 14308), (7154, 11026), (7252, 10877), (7301, 10804)]