20788300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15991}}^1$

素因数の和:16018

約数の個数: 36

約数和(自身を含む): 48583696

約数和(自身を除く): 27795396

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15991, 31982, 63964, 79955, 159910, 207883, 319820, 399775, 415766, 799550, 831532, 1039415, 1599100, 2078830, 4157660, 5197075, 10394150, 20788300]

約数ペア:

[(1, 20788300), (2, 10394150), (4, 5197075), (5, 4157660), (10, 2078830), (13, 1599100), (20, 1039415), (25, 831532), (26, 799550), (50, 415766), (52, 399775), (65, 319820), (100, 207883), (130, 159910), (260, 79955), (325, 63964), (650, 31982), (1300, 15991)]