21427725

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1367}}^1$

素因数の和:1410

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 19283955

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1367, 1425, 3135, 4101, 5225, 6835, 15037, 15675, 20505, 25973, 34175, 45111, 75185, 77919, 102525, 129865, 225555, 285703, 375925, 389595, 649325, 857109, 1127775, 1428515, 1947975, 4285545, 7142575, 21427725]

約数ペア:

[(1, 21427725), (3, 7142575), (5, 4285545), (11, 1947975), (15, 1428515), (19, 1127775), (25, 857109), (33, 649325), (55, 389595), (57, 375925), (75, 285703), (95, 225555), (165, 129865), (209, 102525), (275, 77919), (285, 75185), (475, 45111), (627, 34175), (825, 25973), (1045, 20505), (1367, 15675), (1425, 15037), (3135, 6835), (4101, 5225)]