81009880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{829}}^1$

素因数の和:1196

約数の個数: 64

約数和(自身を含む): 209160000

約数和(自身を除く): 128150120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 349, 698, 829, 1396, 1658, 1745, 2443, 2792, 3316, 3490, 4145, 4886, 5803, 6632, 6980, 8290, 9772, 11606, 12215, 13960, 16580, 19544, 23212, 24430, 29015, 33160, 46424, 48860, 58030, 97720, 116060, 232120, 289321, 578642, 1157284, 1446605, 2025247, 2314568, 2893210, 4050494, 5786420, 8100988, 10126235, 11572840, 16201976, 20252470, 40504940, 81009880]

約数ペア:

[(1, 81009880), (2, 40504940), (4, 20252470), (5, 16201976), (7, 11572840), (8, 10126235), (10, 8100988), (14, 5786420), (20, 4050494), (28, 2893210), (35, 2314568), (40, 2025247), (56, 1446605), (70, 1157284), (140, 578642), (280, 289321), (349, 232120), (698, 116060), (829, 97720), (1396, 58030), (1658, 48860), (1745, 46424), (2443, 33160), (2792, 29015), (3316, 24430), (3490, 23212), (4145, 19544), (4886, 16580), (5803, 13960), (6632, 12215), (6980, 11606), (8290, 9772)]