128709280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{16417}}^1$

素因数の和:16446

約数の個数: 72

約数和(自身を含む): 353742228

約数和(自身を除く): 225032948

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 16417, 32834, 65668, 82085, 114919, 131336, 164170, 229838, 262672, 328340, 459676, 525344, 574595, 656680, 804433, 919352, 1149190, 1313360, 1608866, 1838704, 2298380, 2626720, 3217732, 3677408, 4022165, 4596760, 6435464, 8044330, 9193520, 12870928, 16088660, 18387040, 25741856, 32177320, 64354640, 128709280]

約数ペア:

[(1, 128709280), (2, 64354640), (4, 32177320), (5, 25741856), (7, 18387040), (8, 16088660), (10, 12870928), (14, 9193520), (16, 8044330), (20, 6435464), (28, 4596760), (32, 4022165), (35, 3677408), (40, 3217732), (49, 2626720), (56, 2298380), (70, 1838704), (80, 1608866), (98, 1313360), (112, 1149190), (140, 919352), (160, 804433), (196, 656680), (224, 574595), (245, 525344), (280, 459676), (392, 328340), (490, 262672), (560, 229838), (784, 164170), (980, 131336), (1120, 114919), (1568, 82085), (1960, 65668), (3920, 32834), (7840, 16417)]