72185515

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:331

約数の個数: 24

約数和(自身を含む): 91085904

約数和(自身を除く): 18900389

約数列:

[1, 5, 31, 83, 155, 181, 415, 905, 961, 2573, 4805, 5611, 12865, 15023, 28055, 75115, 79763, 173941, 398815, 465713, 869705, 2328565, 14437103, 72185515]

約数ペア:

[(1, 72185515), (5, 14437103), (31, 2328565), (83, 869705), (155, 465713), (181, 398815), (415, 173941), (905, 79763), (961, 75115), (2573, 28055), (4805, 15023), (5611, 12865)]