30881900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:459

約数の個数: 72

約数和(自身を含む): 77349216

約数和(自身を除く): 46467316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 157, 175, 281, 314, 350, 562, 628, 700, 785, 1099, 1124, 1405, 1570, 1967, 2198, 2810, 3140, 3925, 3934, 4396, 5495, 5620, 7025, 7850, 7868, 9835, 10990, 14050, 15700, 19670, 21980, 27475, 28100, 39340, 44117, 49175, 54950, 88234, 98350, 109900, 176468, 196700, 220585, 308819, 441170, 617638, 882340, 1102925, 1235276, 1544095, 2205850, 3088190, 4411700, 6176380, 7720475, 15440950, 30881900]

約数ペア:

[(1, 30881900), (2, 15440950), (4, 7720475), (5, 6176380), (7, 4411700), (10, 3088190), (14, 2205850), (20, 1544095), (25, 1235276), (28, 1102925), (35, 882340), (50, 617638), (70, 441170), (100, 308819), (140, 220585), (157, 196700), (175, 176468), (281, 109900), (314, 98350), (350, 88234), (562, 54950), (628, 49175), (700, 44117), (785, 39340), (1099, 28100), (1124, 27475), (1405, 21980), (1570, 19670), (1967, 15700), (2198, 14050), (2810, 10990), (3140, 9835), (3925, 7868), (3934, 7850), (4396, 7025), (5495, 5620)]