40830080

素因数分解:

$2^7\times 5^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:637

約数の個数: 64

約数和(自身を含む): 98556480

約数和(自身を除く): 57726400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 131, 160, 262, 320, 487, 524, 640, 655, 974, 1048, 1310, 1948, 2096, 2435, 2620, 3896, 4192, 4870, 5240, 7792, 8384, 9740, 10480, 15584, 16768, 19480, 20960, 31168, 38960, 41920, 62336, 63797, 77920, 83840, 127594, 155840, 255188, 311680, 318985, 510376, 637970, 1020752, 1275940, 2041504, 2551880, 4083008, 5103760, 8166016, 10207520, 20415040, 40830080]

約数ペア:

[(1, 40830080), (2, 20415040), (4, 10207520), (5, 8166016), (8, 5103760), (10, 4083008), (16, 2551880), (20, 2041504), (32, 1275940), (40, 1020752), (64, 637970), (80, 510376), (128, 318985), (131, 311680), (160, 255188), (262, 155840), (320, 127594), (487, 83840), (524, 77920), (640, 63797), (655, 62336), (974, 41920), (1048, 38960), (1310, 31168), (1948, 20960), (2096, 19480), (2435, 16768), (2620, 15584), (3896, 10480), (4192, 9740), (4870, 8384), (5240, 7792)]