20907690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{193}}^1$

素因数の和:383

約数の個数: 64

約数和(自身を含む): 52966656

約数和(自身を除く): 32058966

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 157, 193, 230, 314, 345, 386, 471, 579, 690, 785, 942, 965, 1158, 1570, 1930, 2355, 2895, 3611, 4439, 4710, 5790, 7222, 8878, 10833, 13317, 18055, 21666, 22195, 26634, 30301, 36110, 44390, 54165, 60602, 66585, 90903, 108330, 133170, 151505, 181806, 303010, 454515, 696923, 909030, 1393846, 2090769, 3484615, 4181538, 6969230, 10453845, 20907690]

約数ペア:

[(1, 20907690), (2, 10453845), (3, 6969230), (5, 4181538), (6, 3484615), (10, 2090769), (15, 1393846), (23, 909030), (30, 696923), (46, 454515), (69, 303010), (115, 181806), (138, 151505), (157, 133170), (193, 108330), (230, 90903), (314, 66585), (345, 60602), (386, 54165), (471, 44390), (579, 36110), (690, 30301), (785, 26634), (942, 22195), (965, 21666), (1158, 18055), (1570, 13317), (1930, 10833), (2355, 8878), (2895, 7222), (3611, 5790), (4439, 4710)]