65964280

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53197}}^1$

素因数の和:53239

約数の個数: 32

約数和(自身を含む): 153210240

約数和(自身を除く): 87245960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 53197, 106394, 212788, 265985, 425576, 531970, 1063940, 1649107, 2127880, 3298214, 6596428, 8245535, 13192856, 16491070, 32982140, 65964280]

約数ペア:

[(1, 65964280), (2, 32982140), (4, 16491070), (5, 13192856), (8, 8245535), (10, 6596428), (20, 3298214), (31, 2127880), (40, 1649107), (62, 1063940), (124, 531970), (155, 425576), (248, 265985), (310, 212788), (620, 106394), (1240, 53197)]