21013328

素因数分解:

$2^4\times 7^1\times {\mathrm{373}}^1\times {\mathrm{503}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 46747008

約数和(自身を除く): 25733680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 373, 503, 746, 1006, 1492, 2012, 2611, 2984, 3521, 4024, 5222, 5968, 7042, 8048, 10444, 14084, 20888, 28168, 41776, 56336, 187619, 375238, 750476, 1313333, 1500952, 2626666, 3001904, 5253332, 10506664, 21013328]

約数ペア:

[(1, 21013328), (2, 10506664), (4, 5253332), (7, 3001904), (8, 2626666), (14, 1500952), (16, 1313333), (28, 750476), (56, 375238), (112, 187619), (373, 56336), (503, 41776), (746, 28168), (1006, 20888), (1492, 14084), (2012, 10444), (2611, 8048), (2984, 7042), (3521, 5968), (4024, 5222)]