777779440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{7207}}^1$

素因数の和:7310

約数の個数: 80

約数和(自身を含む): 1930590720

約数和(自身を除く): 1152811280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 71, 76, 80, 95, 142, 152, 190, 284, 304, 355, 380, 568, 710, 760, 1136, 1349, 1420, 1520, 2698, 2840, 5396, 5680, 6745, 7207, 10792, 13490, 14414, 21584, 26980, 28828, 36035, 53960, 57656, 72070, 107920, 115312, 136933, 144140, 273866, 288280, 511697, 547732, 576560, 684665, 1023394, 1095464, 1369330, 2046788, 2190928, 2558485, 2738660, 4093576, 5116970, 5477320, 8187152, 9722243, 10233940, 10954640, 19444486, 20467880, 38888972, 40935760, 48611215, 77777944, 97222430, 155555888, 194444860, 388889720, 777779440]

約数ペア:

[(1, 777779440), (2, 388889720), (4, 194444860), (5, 155555888), (8, 97222430), (10, 77777944), (16, 48611215), (19, 40935760), (20, 38888972), (38, 20467880), (40, 19444486), (71, 10954640), (76, 10233940), (80, 9722243), (95, 8187152), (142, 5477320), (152, 5116970), (190, 4093576), (284, 2738660), (304, 2558485), (355, 2190928), (380, 2046788), (568, 1369330), (710, 1095464), (760, 1023394), (1136, 684665), (1349, 576560), (1420, 547732), (1520, 511697), (2698, 288280), (2840, 273866), (5396, 144140), (5680, 136933), (6745, 115312), (7207, 107920), (10792, 72070), (13490, 57656), (14414, 53960), (21584, 36035), (26980, 28828)]