256562800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{49339}}^1$

素因数の和:49370

約数の個数: 60

約数和(自身を含む): 663820360

約数和(自身を除く): 407257560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 49339, 98678, 197356, 246695, 394712, 493390, 641407, 789424, 986780, 1233475, 1282814, 1973560, 2466950, 2565628, 3207035, 3947120, 4933900, 5131256, 6414070, 9867800, 10262512, 12828140, 16035175, 19735600, 25656280, 32070350, 51312560, 64140700, 128281400, 256562800]

約数ペア:

[(1, 256562800), (2, 128281400), (4, 64140700), (5, 51312560), (8, 32070350), (10, 25656280), (13, 19735600), (16, 16035175), (20, 12828140), (25, 10262512), (26, 9867800), (40, 6414070), (50, 5131256), (52, 4933900), (65, 3947120), (80, 3207035), (100, 2565628), (104, 2466950), (130, 1973560), (200, 1282814), (208, 1233475), (260, 986780), (325, 789424), (400, 641407), (520, 493390), (650, 394712), (1040, 246695), (1300, 197356), (2600, 98678), (5200, 49339)]