256007220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{609541}}^1$

素因数の和:609560

約数の個数: 48

約数和(自身を含む): 819224448

約数和(自身を除く): 563217228

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 609541, 1219082, 1828623, 2438164, 3047705, 3657246, 4266787, 6095410, 7314492, 8533574, 9143115, 12190820, 12800361, 17067148, 18286230, 21333935, 25600722, 36572460, 42667870, 51201444, 64001805, 85335740, 128003610, 256007220]

約数ペア:

[(1, 256007220), (2, 128003610), (3, 85335740), (4, 64001805), (5, 51201444), (6, 42667870), (7, 36572460), (10, 25600722), (12, 21333935), (14, 18286230), (15, 17067148), (20, 12800361), (21, 12190820), (28, 9143115), (30, 8533574), (35, 7314492), (42, 6095410), (60, 4266787), (70, 3657246), (84, 3047705), (105, 2438164), (140, 1828623), (210, 1219082), (420, 609541)]