19647940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5813}}^1$

素因数の和:5848

約数の個数: 36

約数和(自身を含む): 44686404

約数和(自身を除く): 25038464

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5813, 11626, 23252, 29065, 58130, 75569, 116260, 151138, 302276, 377845, 755690, 982397, 1511380, 1964794, 3929588, 4911985, 9823970, 19647940]

約数ペア:

[(1, 19647940), (2, 9823970), (4, 4911985), (5, 3929588), (10, 1964794), (13, 1511380), (20, 982397), (26, 755690), (52, 377845), (65, 302276), (130, 151138), (169, 116260), (260, 75569), (338, 58130), (676, 29065), (845, 23252), (1690, 11626), (3380, 5813)]