1282147840

素因数分解:

$2^9\times 5^1\times {\mathrm{500839}}^1$

素因数の和:500862

約数の個数: 40

約数和(自身を含む): 3074155920

約数和(自身を除く): 1792008080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 500839, 1001678, 2003356, 2504195, 4006712, 5008390, 8013424, 10016780, 16026848, 20033560, 32053696, 40067120, 64107392, 80134240, 128214784, 160268480, 256429568, 320536960, 641073920, 1282147840]

約数ペア:

[(1, 1282147840), (2, 641073920), (4, 320536960), (5, 256429568), (8, 160268480), (10, 128214784), (16, 80134240), (20, 64107392), (32, 40067120), (40, 32053696), (64, 20033560), (80, 16026848), (128, 10016780), (160, 8013424), (256, 5008390), (320, 4006712), (512, 2504195), (640, 2003356), (1280, 1001678), (2560, 500839)]