1020305920

素因数分解:

$2^9\times 5^1\times {\mathrm{398557}}^1$

素因数の和:398580

約数の個数: 40

約数和(自身を含む): 2446349004

約数和(自身を除く): 1426043084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 398557, 797114, 1594228, 1992785, 3188456, 3985570, 6376912, 7971140, 12753824, 15942280, 25507648, 31884560, 51015296, 63769120, 102030592, 127538240, 204061184, 255076480, 510152960, 1020305920]

約数ペア:

[(1, 1020305920), (2, 510152960), (4, 255076480), (5, 204061184), (8, 127538240), (10, 102030592), (16, 63769120), (20, 51015296), (32, 31884560), (40, 25507648), (64, 15942280), (80, 12753824), (128, 7971140), (160, 6376912), (256, 3985570), (320, 3188456), (512, 1992785), (640, 1594228), (1280, 797114), (2560, 398557)]