1285248400

素因数分解:

$2^4\times 5^2\times {\mathrm{661}}^1\times {\mathrm{4861}}^1$

素因数の和:5540

約数の個数: 60

約数和(自身を含む): 3093116884

約数和(自身を除く): 1807868484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 661, 1322, 2644, 3305, 4861, 5288, 6610, 9722, 10576, 13220, 16525, 19444, 24305, 26440, 33050, 38888, 48610, 52880, 66100, 77776, 97220, 121525, 132200, 194440, 243050, 264400, 388880, 486100, 972200, 1944400, 3213121, 6426242, 12852484, 16065605, 25704968, 32131210, 51409936, 64262420, 80328025, 128524840, 160656050, 257049680, 321312100, 642624200, 1285248400]

約数ペア:

[(1, 1285248400), (2, 642624200), (4, 321312100), (5, 257049680), (8, 160656050), (10, 128524840), (16, 80328025), (20, 64262420), (25, 51409936), (40, 32131210), (50, 25704968), (80, 16065605), (100, 12852484), (200, 6426242), (400, 3213121), (661, 1944400), (1322, 972200), (2644, 486100), (3305, 388880), (4861, 264400), (5288, 243050), (6610, 194440), (9722, 132200), (10576, 121525), (13220, 97220), (16525, 77776), (19444, 66100), (24305, 52880), (26440, 48610), (33050, 38888)]