31472720

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1997}}^1$

素因数の和:2207

約数の個数: 40

約数和(自身を含む): 73582344

約数和(自身を除く): 42109624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 1997, 3152, 3940, 3994, 7880, 7988, 9985, 15760, 15976, 19970, 31952, 39940, 79880, 159760, 393409, 786818, 1573636, 1967045, 3147272, 3934090, 6294544, 7868180, 15736360, 31472720]

約数ペア:

[(1, 31472720), (2, 15736360), (4, 7868180), (5, 6294544), (8, 3934090), (10, 3147272), (16, 1967045), (20, 1573636), (40, 786818), (80, 393409), (197, 159760), (394, 79880), (788, 39940), (985, 31952), (1576, 19970), (1970, 15976), (1997, 15760), (3152, 9985), (3940, 7988), (3994, 7880)]