261644280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{128257}}^1$

素因数の和:128288

約数の個数: 64

約数和(自身を含む): 831111840

約数和(自身を除く): 569467560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 128257, 256514, 384771, 513028, 641285, 769542, 1026056, 1282570, 1539084, 1923855, 2180369, 2565140, 3078168, 3847710, 4360738, 5130280, 6541107, 7695420, 8721476, 10901845, 13082214, 15390840, 17442952, 21803690, 26164428, 32705535, 43607380, 52328856, 65411070, 87214760, 130822140, 261644280]

約数ペア:

[(1, 261644280), (2, 130822140), (3, 87214760), (4, 65411070), (5, 52328856), (6, 43607380), (8, 32705535), (10, 26164428), (12, 21803690), (15, 17442952), (17, 15390840), (20, 13082214), (24, 10901845), (30, 8721476), (34, 7695420), (40, 6541107), (51, 5130280), (60, 4360738), (68, 3847710), (85, 3078168), (102, 2565140), (120, 2180369), (136, 1923855), (170, 1539084), (204, 1282570), (255, 1026056), (340, 769542), (408, 641285), (510, 513028), (680, 384771), (1020, 256514), (2040, 128257)]