21921725

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{347}}^1$

素因数の和:402

約数の個数: 36

約数和(自身を含む): 32881824

約数和(自身を除く): 10960099

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 347, 361, 475, 665, 1735, 1805, 2429, 2527, 3325, 6593, 8675, 9025, 12145, 12635, 32965, 46151, 60725, 63175, 125267, 164825, 230755, 626335, 876869, 1153775, 3131675, 4384345, 21921725]

約数ペア:

[(1, 21921725), (5, 4384345), (7, 3131675), (19, 1153775), (25, 876869), (35, 626335), (95, 230755), (133, 164825), (175, 125267), (347, 63175), (361, 60725), (475, 46151), (665, 32965), (1735, 12635), (1805, 12145), (2429, 9025), (2527, 8675), (3325, 6593)]