20458990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{797}}^1$

素因数の和:972

約数の個数: 32

約数和(自身を含む): 39299904

約数和(自身を除く): 18840914

約数列:

[1, 2, 5, 10, 17, 34, 85, 151, 170, 302, 755, 797, 1510, 1594, 2567, 3985, 5134, 7970, 12835, 13549, 25670, 27098, 67745, 120347, 135490, 240694, 601735, 1203470, 2045899, 4091798, 10229495, 20458990]

約数ペア:

[(1, 20458990), (2, 10229495), (5, 4091798), (10, 2045899), (17, 1203470), (34, 601735), (85, 240694), (151, 135490), (170, 120347), (302, 67745), (755, 27098), (797, 25670), (1510, 13549), (1594, 12835), (2567, 7970), (3985, 5134)]