161777995

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:555

約数の個数: 32

約数和(自身を含む): 209018880

約数和(自身を除く): 47240885

約数列:

[1, 5, 31, 47, 53, 155, 235, 265, 419, 1457, 1643, 2095, 2491, 7285, 8215, 12455, 12989, 19693, 22207, 64945, 77221, 98465, 111035, 386105, 610483, 688417, 1043729, 3052415, 3442085, 5218645, 32355599, 161777995]

約数ペア:

[(1, 161777995), (5, 32355599), (31, 5218645), (47, 3442085), (53, 3052415), (155, 1043729), (235, 688417), (265, 610483), (419, 386105), (1457, 111035), (1643, 98465), (2095, 77221), (2491, 64945), (7285, 22207), (8215, 19693), (12455, 12989)]