31518640

素因数分解:

$2^4\times 5^1\times {\mathrm{487}}^1\times {\mathrm{809}}^1$

素因数の和:1309

約数の個数: 40

約数和(自身を含む): 73522080

約数和(自身を除く): 42003440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 487, 809, 974, 1618, 1948, 2435, 3236, 3896, 4045, 4870, 6472, 7792, 8090, 9740, 12944, 16180, 19480, 32360, 38960, 64720, 393983, 787966, 1575932, 1969915, 3151864, 3939830, 6303728, 7879660, 15759320, 31518640]

約数ペア:

[(1, 31518640), (2, 15759320), (4, 7879660), (5, 6303728), (8, 3939830), (10, 3151864), (16, 1969915), (20, 1575932), (40, 787966), (80, 393983), (487, 64720), (809, 38960), (974, 32360), (1618, 19480), (1948, 16180), (2435, 12944), (3236, 9740), (3896, 8090), (4045, 7792), (4870, 6472)]