18181810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{659}}^1$

素因数の和:786

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 16032590

約数列:

[1, 2, 5, 10, 31, 62, 89, 155, 178, 310, 445, 659, 890, 1318, 2759, 3295, 5518, 6590, 13795, 20429, 27590, 40858, 58651, 102145, 117302, 204290, 293255, 586510, 1818181, 3636362, 9090905, 18181810]

約数ペア:

[(1, 18181810), (2, 9090905), (5, 3636362), (10, 1818181), (31, 586510), (62, 293255), (89, 204290), (155, 117302), (178, 102145), (310, 58651), (445, 40858), (659, 27590), (890, 20429), (1318, 13795), (2759, 6590), (3295, 5518)]