20679880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39769}}^1$

素因数の和:39793

約数の個数: 32

約数和(自身を含む): 50110200

約数和(自身を除く): 29430320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39769, 79538, 159076, 198845, 318152, 397690, 516997, 795380, 1033994, 1590760, 2067988, 2584985, 4135976, 5169970, 10339940, 20679880]

約数ペア:

[(1, 20679880), (2, 10339940), (4, 5169970), (5, 4135976), (8, 2584985), (10, 2067988), (13, 1590760), (20, 1033994), (26, 795380), (40, 516997), (52, 397690), (65, 318152), (104, 198845), (130, 159076), (260, 79538), (520, 39769)]