255680

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:81

約数の個数: 56

約数和(自身を含む): 658368

約数和(自身を除く): 402688

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 47, 64, 68, 80, 85, 94, 136, 160, 170, 188, 235, 272, 320, 340, 376, 470, 544, 680, 752, 799, 940, 1088, 1360, 1504, 1598, 1880, 2720, 3008, 3196, 3760, 3995, 5440, 6392, 7520, 7990, 12784, 15040, 15980, 25568, 31960, 51136, 63920, 127840, 255680]

約数ペア:

[(1, 255680), (2, 127840), (4, 63920), (5, 51136), (8, 31960), (10, 25568), (16, 15980), (17, 15040), (20, 12784), (32, 7990), (34, 7520), (40, 6392), (47, 5440), (64, 3995), (68, 3760), (80, 3196), (85, 3008), (94, 2720), (136, 1880), (160, 1598), (170, 1504), (188, 1360), (235, 1088), (272, 940), (320, 799), (340, 752), (376, 680), (470, 544)]