18865964

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{461}}^1\times {\mathrm{787}}^1$

素因数の和:1265

約数の個数: 24

約数和(自身を含む): 35677488

約数和(自身を除く): 16811524

約数列:

[1, 2, 4, 13, 26, 52, 461, 787, 922, 1574, 1844, 3148, 5993, 10231, 11986, 20462, 23972, 40924, 362807, 725614, 1451228, 4716491, 9432982, 18865964]

約数ペア:

[(1, 18865964), (2, 9432982), (4, 4716491), (13, 1451228), (26, 725614), (52, 362807), (461, 40924), (787, 23972), (922, 20462), (1574, 11986), (1844, 10231), (3148, 5993)]