19517500

素因数分解:

$2^2\times 5^4\times {\mathrm{37}}^1\times {\mathrm{211}}^1$

素因数の和:272

約数の個数: 60

約数和(自身を含む): 44042152

約数和(自身を除く): 24524652

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 211, 250, 370, 422, 500, 625, 740, 844, 925, 1055, 1250, 1850, 2110, 2500, 3700, 4220, 4625, 5275, 7807, 9250, 10550, 15614, 18500, 21100, 23125, 26375, 31228, 39035, 46250, 52750, 78070, 92500, 105500, 131875, 156140, 195175, 263750, 390350, 527500, 780700, 975875, 1951750, 3903500, 4879375, 9758750, 19517500]

約数ペア:

[(1, 19517500), (2, 9758750), (4, 4879375), (5, 3903500), (10, 1951750), (20, 975875), (25, 780700), (37, 527500), (50, 390350), (74, 263750), (100, 195175), (125, 156140), (148, 131875), (185, 105500), (211, 92500), (250, 78070), (370, 52750), (422, 46250), (500, 39035), (625, 31228), (740, 26375), (844, 23125), (925, 21100), (1055, 18500), (1250, 15614), (1850, 10550), (2110, 9250), (2500, 7807), (3700, 5275), (4220, 4625)]