21143925

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{8543}}^1$

素因数の和:8570

約数の個数: 36

約数和(自身を含む): 41318784

約数和(自身を除く): 20174859

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 165, 225, 275, 495, 825, 2475, 8543, 25629, 42715, 76887, 93973, 128145, 213575, 281919, 384435, 469865, 640725, 845757, 1409595, 1922175, 2349325, 4228785, 7047975, 21143925]

約数ペア:

[(1, 21143925), (3, 7047975), (5, 4228785), (9, 2349325), (11, 1922175), (15, 1409595), (25, 845757), (33, 640725), (45, 469865), (55, 384435), (75, 281919), (99, 213575), (165, 128145), (225, 93973), (275, 76887), (495, 42715), (825, 25629), (2475, 8543)]