217616125

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:766

約数の個数: 32

約数和(自身を含む): 283944960

約数和(自身を除く): 66328835

約数列:

[1, 5, 25, 31, 89, 125, 155, 445, 631, 775, 2225, 2759, 3155, 3875, 11125, 13795, 15775, 19561, 56159, 68975, 78875, 97805, 280795, 344875, 489025, 1403975, 1740929, 2445125, 7019875, 8704645, 43523225, 217616125]

約数ペア:

[(1, 217616125), (5, 43523225), (25, 8704645), (31, 7019875), (89, 2445125), (125, 1740929), (155, 1403975), (445, 489025), (631, 344875), (775, 280795), (2225, 97805), (2759, 78875), (3155, 68975), (3875, 56159), (11125, 19561), (13795, 15775)]