25990210

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{197}}^1$

素因数の和:450

約数の個数: 32

約数和(自身を含む): 47900160

約数和(自身を除く): 21909950

約数列:

[1, 2, 5, 10, 79, 158, 167, 197, 334, 394, 395, 790, 835, 985, 1670, 1970, 13193, 15563, 26386, 31126, 32899, 65798, 65965, 77815, 131930, 155630, 164495, 328990, 2599021, 5198042, 12995105, 25990210]

約数ペア:

[(1, 25990210), (2, 12995105), (5, 5198042), (10, 2599021), (79, 328990), (158, 164495), (167, 155630), (197, 131930), (334, 77815), (394, 65965), (395, 65798), (790, 32899), (835, 31126), (985, 26386), (1670, 15563), (1970, 13193)]