678741590

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 1296622080

約数和(自身を除く): 617880490

約数列:

[1, 2, 5, 10, 31, 62, 73, 89, 146, 155, 178, 310, 337, 365, 445, 674, 730, 890, 1685, 2263, 2759, 3370, 4526, 5518, 6497, 10447, 11315, 12994, 13795, 20894, 22630, 24601, 27590, 29993, 32485, 49202, 52235, 59986, 64970, 104470, 123005, 149965, 201407, 246010, 299930, 402814, 762631, 929783, 1007035, 1525262, 1859566, 2014070, 2189489, 3813155, 4378978, 4648915, 7626310, 9297830, 10947445, 21894890, 67874159, 135748318, 339370795, 678741590]

約数ペア:

[(1, 678741590), (2, 339370795), (5, 135748318), (10, 67874159), (31, 21894890), (62, 10947445), (73, 9297830), (89, 7626310), (146, 4648915), (155, 4378978), (178, 3813155), (310, 2189489), (337, 2014070), (365, 1859566), (445, 1525262), (674, 1007035), (730, 929783), (890, 762631), (1685, 402814), (2263, 299930), (2759, 246010), (3370, 201407), (4526, 149965), (5518, 123005), (6497, 104470), (10447, 64970), (11315, 59986), (12994, 52235), (13795, 49202), (20894, 32485), (22630, 29993), (24601, 27590)]