19601020

素因数分解:

$2^2\times 5^1\times {\mathrm{983}}^1\times {\mathrm{997}}^1$

素因数の和:1989

約数の個数: 24

約数和(自身を含む): 41245344

約数和(自身を除く): 21644324

約数列:

[1, 2, 4, 5, 10, 20, 983, 997, 1966, 1994, 3932, 3988, 4915, 4985, 9830, 9970, 19660, 19940, 980051, 1960102, 3920204, 4900255, 9800510, 19601020]

約数ペア:

[(1, 19601020), (2, 9800510), (4, 4900255), (5, 3920204), (10, 1960102), (20, 980051), (983, 19940), (997, 19660), (1966, 9970), (1994, 9830), (3932, 4985), (3988, 4915)]