153967405

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 198443520

約数和(自身を除く): 44476115

約数列:

[1, 5, 23, 71, 109, 115, 173, 355, 545, 865, 1633, 2507, 3979, 7739, 8165, 12283, 12535, 18857, 19895, 38695, 61415, 94285, 177997, 282509, 433711, 889985, 1338847, 1412545, 2168555, 6694235, 30793481, 153967405]

約数ペア:

[(1, 153967405), (5, 30793481), (23, 6694235), (71, 2168555), (109, 1412545), (115, 1338847), (173, 889985), (355, 433711), (545, 282509), (865, 177997), (1633, 94285), (2507, 61415), (3979, 38695), (7739, 19895), (8165, 18857), (12283, 12535)]