281154680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1\times {\mathrm{461}}^1$

素因数の和:744

約数の個数: 64

約数和(自身を含む): 645321600

約数和(自身を除く): 364166920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 193, 316, 386, 395, 461, 632, 772, 790, 922, 965, 1544, 1580, 1844, 1930, 2305, 3160, 3688, 3860, 4610, 7720, 9220, 15247, 18440, 30494, 36419, 60988, 72838, 76235, 88973, 121976, 145676, 152470, 177946, 182095, 291352, 304940, 355892, 364190, 444865, 609880, 711784, 728380, 889730, 1456760, 1779460, 3558920, 7028867, 14057734, 28115468, 35144335, 56230936, 70288670, 140577340, 281154680]

約数ペア:

[(1, 281154680), (2, 140577340), (4, 70288670), (5, 56230936), (8, 35144335), (10, 28115468), (20, 14057734), (40, 7028867), (79, 3558920), (158, 1779460), (193, 1456760), (316, 889730), (386, 728380), (395, 711784), (461, 609880), (632, 444865), (772, 364190), (790, 355892), (922, 304940), (965, 291352), (1544, 182095), (1580, 177946), (1844, 152470), (1930, 145676), (2305, 121976), (3160, 88973), (3688, 76235), (3860, 72838), (4610, 60988), (7720, 36419), (9220, 30494), (15247, 18440)]