21978100

素因数分解:

$2^2\times 5^2\times {\mathrm{271}}^1\times {\mathrm{811}}^1$

素因数の和:1096

約数の個数: 36

約数和(自身を含む): 47927488

約数和(自身を除く): 25949388

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 271, 542, 811, 1084, 1355, 1622, 2710, 3244, 4055, 5420, 6775, 8110, 13550, 16220, 20275, 27100, 40550, 81100, 219781, 439562, 879124, 1098905, 2197810, 4395620, 5494525, 10989050, 21978100]

約数ペア:

[(1, 21978100), (2, 10989050), (4, 5494525), (5, 4395620), (10, 2197810), (20, 1098905), (25, 879124), (50, 439562), (100, 219781), (271, 81100), (542, 40550), (811, 27100), (1084, 20275), (1355, 16220), (1622, 13550), (2710, 8110), (3244, 6775), (4055, 5420)]