278696985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1\times {\mathrm{283}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 522160128

約数和(自身を除く): 243463143

約数列:

[1, 3, 5, 7, 15, 21, 35, 83, 105, 113, 249, 283, 339, 415, 565, 581, 791, 849, 1245, 1415, 1695, 1743, 1981, 2373, 2905, 3955, 4245, 5943, 8715, 9379, 9905, 11865, 23489, 28137, 29715, 31979, 46895, 65653, 70467, 95937, 117445, 140685, 159895, 164423, 196959, 223853, 328265, 352335, 479685, 493269, 671559, 822115, 984795, 1119265, 2466345, 2654257, 3357795, 7962771, 13271285, 18579799, 39813855, 55739397, 92898995, 278696985]

約数ペア:

[(1, 278696985), (3, 92898995), (5, 55739397), (7, 39813855), (15, 18579799), (21, 13271285), (35, 7962771), (83, 3357795), (105, 2654257), (113, 2466345), (249, 1119265), (283, 984795), (339, 822115), (415, 671559), (565, 493269), (581, 479685), (791, 352335), (849, 328265), (1245, 223853), (1415, 196959), (1695, 164423), (1743, 159895), (1981, 140685), (2373, 117445), (2905, 95937), (3955, 70467), (4245, 65653), (5943, 46895), (8715, 31979), (9379, 29715), (9905, 28137), (11865, 23489)]