204851840

素因数分解:

$2^7\times 5^1\times {\mathrm{320081}}^1$

素因数の和:320100

約数の個数: 32

約数和(自身を含む): 489725460

約数和(自身を除く): 284873620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 320081, 640162, 1280324, 1600405, 2560648, 3200810, 5121296, 6401620, 10242592, 12803240, 20485184, 25606480, 40970368, 51212960, 102425920, 204851840]

約数ペア:

[(1, 204851840), (2, 102425920), (4, 51212960), (5, 40970368), (8, 25606480), (10, 20485184), (16, 12803240), (20, 10242592), (32, 6401620), (40, 5121296), (64, 3200810), (80, 2560648), (128, 1600405), (160, 1280324), (320, 640162), (640, 320081)]