161971840

素因数分解:

$2^7\times 5^1\times {\mathrm{253081}}^1$

素因数の和:253100

約数の個数: 32

約数和(自身を含む): 387215460

約数和(自身を除く): 225243620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 253081, 506162, 1012324, 1265405, 2024648, 2530810, 4049296, 5061620, 8098592, 10123240, 16197184, 20246480, 32394368, 40492960, 80985920, 161971840]

約数ペア:

[(1, 161971840), (2, 80985920), (4, 40492960), (5, 32394368), (8, 20246480), (10, 16197184), (16, 10123240), (20, 8098592), (32, 5061620), (40, 4049296), (64, 2530810), (80, 2024648), (128, 1265405), (160, 1012324), (320, 506162), (640, 253081)]