642689860

素因数分解:

$2^2\times 5^1\times {\mathrm{277}}^1\times {\mathrm{116009}}^1$

素因数の和:116295

約数の個数: 24

約数和(自身を含む): 1354532760

約数和(自身を除く): 711842900

約数列:

[1, 2, 4, 5, 10, 20, 277, 554, 1108, 1385, 2770, 5540, 116009, 232018, 464036, 580045, 1160090, 2320180, 32134493, 64268986, 128537972, 160672465, 321344930, 642689860]

約数ペア:

[(1, 642689860), (2, 321344930), (4, 160672465), (5, 128537972), (10, 64268986), (20, 32134493), (277, 2320180), (554, 1160090), (1108, 580045), (1385, 464036), (2770, 232018), (5540, 116009)]