28764280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23197}}^1$

素因数の和:23239

約数の個数: 32

約数和(自身を含む): 66810240

約数和(自身を除く): 38045960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 23197, 46394, 92788, 115985, 185576, 231970, 463940, 719107, 927880, 1438214, 2876428, 3595535, 5752856, 7191070, 14382140, 28764280]

約数ペア:

[(1, 28764280), (2, 14382140), (4, 7191070), (5, 5752856), (8, 3595535), (10, 2876428), (20, 1438214), (31, 927880), (40, 719107), (62, 463940), (124, 231970), (155, 185576), (248, 115985), (310, 92788), (620, 46394), (1240, 23197)]