20247440

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{6173}}^1$

素因数の和:6227

約数の個数: 40

約数和(自身を含む): 48231288

約数和(自身を除く): 27983848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 6173, 12346, 24692, 30865, 49384, 61730, 98768, 123460, 246920, 253093, 493840, 506186, 1012372, 1265465, 2024744, 2530930, 4049488, 5061860, 10123720, 20247440]

約数ペア:

[(1, 20247440), (2, 10123720), (4, 5061860), (5, 4049488), (8, 2530930), (10, 2024744), (16, 1265465), (20, 1012372), (40, 506186), (41, 493840), (80, 253093), (82, 246920), (164, 123460), (205, 98768), (328, 61730), (410, 49384), (656, 30865), (820, 24692), (1640, 12346), (3280, 6173)]