821435140

素因数分解:

$2^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{237409}}^1$

素因数の和:237591

約数の個数: 24

約数和(自身を含む): 1734992280

約数和(自身を除く): 913557140

約数列:

[1, 2, 4, 5, 10, 20, 173, 346, 692, 865, 1730, 3460, 237409, 474818, 949636, 1187045, 2374090, 4748180, 41071757, 82143514, 164287028, 205358785, 410717570, 821435140]

約数ペア:

[(1, 821435140), (2, 410717570), (4, 205358785), (5, 164287028), (10, 82143514), (20, 41071757), (173, 4748180), (346, 2374090), (692, 1187045), (865, 949636), (1730, 474818), (3460, 237409)]